Aaron O'Neill
Research expert covering historical data
Detailed statistics
Gun ownership in the U.S. 1972-2023
Detailed statistics
U.S. public opinion on a law that bans private handgun possession 1959-2023
Detailed statistics
Number of mass shooting victims in the U.S. and other developed countries 1998-2019
Number of mass shooting victims in the U.S. and other developed countries 1998-2019
Comparison of the annual number of mass shooting casualties in the United States and all other developed countries combined from 1998 to 2019
U.S. adults' support for various gun control measures by party 2024
Level of support for various gun control measures in the United States 2024, by party identification
U.S. adults' support for various gun control measures 2023
Level of support for various gun control measures in the United States 2023
Share of mass public shooters U.S. 1999-2024, by location/relation to shooting site
Share of mass public shooters in the United States from 1966 to January 2024, by location and existing relationship to the shooting site*
Leading gun control lobby organizations in the U.S., by amount spent 2022
Leading gun control lobby organizations in the United States in 2022, by amount spent (in 1,000 U.S. dollars)
Share of mass public shooters U.S. 1999-2024, by race and location of shooting
Share of mass public shooters in the United States from 1966 to January 2024, by race and location of shooting*
U.S. mass shooting victims, by fatalities and injuries 1982-2024
Number of victims of mass shootings in the United States between 1982 and September 2024
U.S. spending on gun rights versus gun control lobbying 1998-2022
Funds spent on lobbying for gun control versus lobbying for gun rights in the United States from 1998 to 2022 (in U.S. dollars)
Worst mass shootings in the U.S., as of September 2024
Number of victims of the worst mass shootings in the United States between 1982 and September 2024
Number of shooting incidents Japan 2017-2023, by firearm type
Number of gun shooting incidents in Japan from 2017 to 2023, by type of firearm
Number of injuries from shooting incidents Japan 2014-2023
Number of injuries resulting from gun shooting incidents in Japan from 2014 to 2023
Guns used in mass shootings in the U.S. 1982-2024
Weapon types used in mass shootings in the United States between 1982 and September 2024, by number of weapons and incidents
U.S. support for stricter gun control laws 2023, by party
Do you support or oppose stricter gun control laws in the United States?
Frequency of weight control in Italy 2023, by body mass index
Share of individuals checking their weight in Italy in 2023, by body mass index and frequency
Mass shootings in the U.S. 1982-2024, by state
Number of mass shootings in the United States between 1982 and September 2024, by state
Mass shootings in the U.S. 1982-2024
Number of mass shootings in the United States between 1982 and September 2024
Mass shootings in the U.S.: shooters by gender, as of September 2024
Number of mass shootings in the United States between 1982 and September 2024, by shooter's gender
U.S. support for protecting or limiting gun ownership rights 2024
Do you think it's more important to protect or to limit gun ownership rights?
Mass shootings in the U.S. by shooter’s by race/ethnicity as of September 2024
Number of mass shootings in the United States between 1982 and September 2024, by shooter's race or ethnicity
Number of fatalities from shooting incidents Japan 2014-2023
Number of fatalities resulting from gun shooting incidents in Japan from 2014 to 2023
Americans on gun laws reducing the number of mass shootings 2017
If new gun control laws were passed, do you think it would reduce the number of mass shootings in the U.S.?
Annual share of AR-15 assault rifles in total U.S. firearm production 1990-2020
Annual share of AR-15 assault rifles in the total number of firearms manufactured in the United States from 1990 to 2020
U.S. gun laws 2024, by state
Gun laws in the United States in 2024, by state
Leading states for gun law strength in the U.S. 2024
Leading states for gun law strength in the United States as of January 2024 (index score)
Average total cost per data breach worldwide 2020-2024, by industry
Average cost of a data breach worldwide from May 2020 to February 2024, by industry (in million U.S. dollars)
Average total cost per data breach worldwide 2024, by country or region
Average cost of a data breach worldwide from March 2023 to February 2024, by country or region (in million U.S. dollars)
Mass shootings in the U.S.: legality of shooter's weapons, as of September 2024
Number of mass shootings in the United States between 1982 and September 2024, by legality of shooter's weapons
Opinion on gun control strictness and number of mass shootings in the U.S. 2017
Opinion on the effect of inhibiting legal gun ownership on number of mass shootings in the United States as of 2017, by political party
Total federal drug control spending in the U.S. 2012-2025
Total federal drug control spending in the United States from FY 2012 to FY 2025 (in million U.S. dollars)
Global biggest data breaches 2023, by impact
Most significant incidents of data breach worldwide in 2023, by number of breached accounts (in millions)
Global markets with highest data breach density 2023
Markets with highest data breach density worldwide in 2023 (in breaches per 1,000 individuals)
Americans' fears of becoming a victim of a mass shooting 2015 & 2017
How worried are you that you or someone in your family will become a victim of a mass shooting?
Share of U.S. adults with select opinions on mass shootings U.S. 2023
Do you think that mass shootings are something that can be stopped or are just a fact of life in the United States today?
Share of adults who think mass shootings reflect broader problems in society U.S 2023
Do you think mass shootings reflect broader problems in American society, or are they just the isolated acts of troubled individuals?
Current year in various historical and world calendars 2024
Current year according to various historical and world calendars, as of January 1. 2024
U.S. mass shootings 1982-2024, by prior signs of shooter's mental health issues
Mass shootings in the United States between 1982 and September 2024, by presence of prior signs of shooter's mental health issues
Mobile data and voice tariffs in Russia 2021-2023, by basket
Monthly price of mobile data and voice services in Russia from 2021 to 2023, by basket (in U.S. dollars)
Largest deals for data center property sales in Europe 2023-2024
Largest data center property and site sale deals in Europe from 1st half 2023 to 1st half 2024
Leading data center operators for cloud on-ramps worldwide 2023, by region
Leading data center operators for cloud on-ramps in data centers worldwide in 2023, by region
Global type of data compromised 2021-2024
Type of data compromised in worldwide data breaches from 2021 to 2024
Global cost per record of a data breach 2024, by initial attack vector
Cost of a data breach worldwide as of February 2024, by initial attack vector (in million U.S. dollars)
Revenues from mobile data services in Italy 2013-2023, by service type
Revenues from mobile data service in Italy from 2013 to 2023, by service type (in billion euros)
Global firms benefits of data services on Kubernetes environments 2024
Global firms benefits of data services on Kubernetes environments in 2024
Global firms desired benefits of data management on Kubernetes 2024
Which of the following capabilities for data management on Kubernetes would benefit your organization?
Firm's selection of data services on Kubernetes environments worldwide 2024
Does your organization run any of the following types of data services or workloads on Kubernetes environments?
Consumer attitudes towards personal data sharing India 2024
Consumer attitudes towards personal data sharing in India in 2024
Number of data compromises and impacted individuals in U.S. 2005-2023
Annual number of data compromises and individuals impacted in the United States from 2005 to 2023
All-time biggest online data breaches 2024
Most significant cases of data breach worldwide as of January 2024 (in millions), by number of compromised data records and individuals impacted
Largest deals for data center property sales in the U.S. 2023
Largest data center property sale deals in the United States in 2023
Companies using big data South Korea 2022, by type of analyzed data
Usage of big data technology and services among companies in South Korea in 2022, by type of analyzed data
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