Year	Number
1972	6174
1973	6734
1974	8739
1975	9947
1976	11295
1977	12439
1978	13364
1979	14801
1980	16376
1981	17154
1982	16454
1983	15910
1984	17069
1985	18362
1986	21785
1987	20662
1988	21132
1989	22452
1990	22820
1991	24632
1992	25357
1993	26303
1994	29503
1995	31406
1996	36127
1999	39911
2000	44620
2001	45373
2003	52528
2008	56799
2009	64529
2010	83630
2011	95292
2012	102685
2013	105865
2014	108923
2015	110389
2016	114890
2017	123403
2019	122582
2020	119280
2021	119280
2023	99283