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	5475
1988	30768
1989	72735
1990	125047
1991	174557
1992	215061
1993	257703
1994	332165
1995	447167
1996	662713
1997	1044379
1998	1698565
1999	3057509
2000	4638519
2001	5275791
2002	5736303
2003	6189000
2004	6274763
2005	6834233
2006	7436157
2007	8208884
2008	8896706
2009	9322580
2010	9644157
2011	10082636
2012	10561075
2013	11048637
2014	11150000
2015	11243210
2016	11242105
2017	11088598
2018	10788602
2019	10886648
2020	11006060
2021	10728129
2022	10450200