Year	number of cases
2008	38240123
2009	16734280
2010	42350100
2011	15023796
2012	30148600
2013	22125771
2014	19119870
2015	19188817
2016	24418613
2017	18673256
2018	17462844
2019	25199758
2020	30984299
2021	23725311
2022	32541018
2023	26393278