Year	Number
1987	4771039
1988	4932875
1989	5224980
1994	7045004
1995	7136146
1996	7089721
1998	7083273
1999	7166475
2000	6996463
2001	6748801
2002	6704788
2003	6801133
2004	6620212
2005	5351370
2006	4810532
2007	4144688
2008	3392868
2009	3522979
2010	3913408
2011	3451893
2012	3376905
2014	2704516
2015	2942915
2021	4446762
2022	4326212