Year	number of cases
2008	33484175
2009	16615160
2010	42227350
2011	14013796
2012	28292650
2013	20926708
2014	18341229
2015	18558697
2016	20968163
2017	15018439
2018	15835303
2019	23838549
2020	28262108
2021	22615000
2022	31519406
2023	25665153