In view of the recent spate of mass shootings at taverns across the country, a mass shooting being defined as three or more people being shot in the same incident, what are the relevant details of the number (a) mass shootings at taverns, (b) persons murdered in the specified mass shooting and (c) persons injured in the shootings (i) in the period (aa) 1 January 2020 to 31 December 2020 and (bb) 1 January 2021 to 31 December 2021?