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	3260
1987	6720
1988	9573
1989	13492
1990	22285
1991	33749
1992	48586
1993	70222
1994	106902
1995	194185
1996	307485
1997	471395
1998	709596
1999	1101561
2000	1686452
2001	2329047
2002	2957717
2003	3577603
2004	4884774
2005	5736840
2006	6749024
2007	8005453
2008	9391122
2009	10081098
2010	10887695
2011	11831217
2012	12828717
2013	13248944
2014	14554739
2015	15129026
2016	16157539
2017	15928906
2018	15819685
2019	15792849
2020	15767955
2021	16654736
2022	17444565