Year	Number
1990	5711891
1991	5859766
1992	6741192
1993	4719981
1994	4225436
1995	4182235
1996	3954150
1997	3908111
1998	3900141
1999	3998104
2000	3710027
2001	3561260
2002	2888785
2003	2330136
2004	2392313
2005	2073014
2006	1915402
2007	2071137
2008	1924040
2009	2043516
2010	2042150
2011	1844363
2012	2135527
2013	2694981
2014	3856463
2015	4754264
2016	5034006
2017	5664295
2018	5903517
2019	5800273
2020	5825286
2021	5855163
2022	8202242
2023	8685118