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	0
1992	250
1993	500
1994	1104
1995	2500
1996	4000
1997	26000
1998	75000
1999	149000
2000	279000
2001	520000
2002	1075000
2003	1365000
2004	2781560
2005	9000000
2006	19130983
2007	34370000
2008	44640000
2009	51359315
2010	67923887
2011	84368700
2012	97180000
2013	116553076
2014	126866091
2015	131375724
2016	135981846
2017	150945000
2018	161771617
2019	165572000
2020	176279465
2021	184444949
2022	180198049