Year	Number
1975	75760
1976	82870
1977	97600
1978	138950
1979	151620
1980	261360
1981	192990
1982	168980
1983	144320
1984	128500
1985	130420
1986	119920
1987	112740
1988	107799
1989	99935
1990	99821
1991	88164
1992	63625
1993	119232
1994	100817
1995	106565
1996	107962
1997	169154
1998	138334
1999	100133
2000	104966
2001	110711
2002	112614
2003	119056
2004	121145
2005	117050
2006	133107
2007	125627
2008	112916
2009	105286
2010	96666
2011	89245
2012	84475
2013	136489
2014	130227
2015	108252
2016	106431
2017	104605
2018	102234
2019	97556
2020	96179
2021	100510
2022	94472
2023	87314