Year	number of cases
2008	2757000
2009	2062000
2010	1002000
2011	2499000
2012	3859000
2013	7022000
2014	5787000
2015	2221000
2016	5930000
2017	2529000
2018	3802000
2019	4495000
2020	4450000
2021	5714000
2022	5453000
2023	2594000