Year	Number
1965	200
1966	200
1967	200
1968	200
1969	200
1970	557
1971	557
1972	557
1973	557
1974	557
1975	3701
1976	6649
1977	9699
1978	11112
1979	11163
1980	17286
1981	17286
1982	19642
1983	21370
1984	23391
1985	41320
1986	49565
1987	56899
1988	81321
1989	91462
1990	104679
1991	116558
1992	130107
1993	147784
1994	157840
1995	169939
1996	197687
1997	200557
1998	219956
1999	220373
2000	221807
2001	230507
2002	227625
2003	236178
2004	242745
2005	265237
2006	269700
2007	294921
2008	301010
2009	300139
2010	283941
2011	287323
2012	304545
2013	351411
2014	375196
2015	434932
2016	422518
2017	509756
2018	560326
2019	592196
2020	594550
2021	572166
2022	563172