Year	Number
1960	0
1965	0
1970	0
1975	0
1976	0
1977	0
1978	0
1979	0
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	0
1988	0
1989	0
1990	0
1991	1242
1992	4651
1993	14043
1994	30429
1995	48900
1996	200315
1997	526339
1998	965476
1999	1944553
2000	4346009
2001	6947151
2002	8610177
2003	9708683
2004	10782567
2005	11775878
2006	12406199
2007	13228631
2008	13780165
2009	13062617
2010	12934100
2011	13167700
2012	13521900
2013	13719300
2014	13913100
2015	12454575.01
2016	12485045
2017	12636359
2018	12704262
2019	13101360
2020	12999812
2021	13286894
2022	13475347