Year	number of cases
2009	1000000
2010	400000
2011	168000
2012	1000000
2013	1000000
2014	1003000
2015	621000
2016	922000
2017	2166000
2018	1840000
2019	1672000
2020	2209000
2021	2712000
2022	4004000
2023	3772000