Year	number of cases
2008	7590400
2009	7139000
2010	13252000
2011	2957000
2012	11777600
2013	4063000
2014	4981000
2015	7950900
2016	3566040
2017	2839876
2018	3314920
2019	9527300
2020	9244120
2021	5250000
2022	12523370
2023	3596054