Year number of cases 2008 2022000 2009 1300 2011 52000 2012 901000 2013 308000 2014 39800 2015 76000 2016 1220000 2017 1666000 2018 1266000 2019 957000 2020 1741050 2021 633000 2022 690000 2023 394000