Year	Number
1976	396099
1978	415601
1979	428218
1980	440617
1981	447501
1982	428750
1983	405293
1984	408591
1985	426837
1986	446794
1987	449699
1988	459880
1989	465958
1990	475074
1991	478285
1992	404904
1993	362439
1994	350912
1995	349430
1996	346945
1997	350157
1998	359509
1999	363502
2000	365664
2001	377936
2002	382205
2003	396095
2004	393503
2005	407403
2006	408980
2007	410444
2008	406553
2009	354587
2010	355871
2011	355158
2012	349269
2013	346365
2014	333291
2015	315079
2016	294315
2017	280378
2018	268872
2019	256072
2020	242242
2021	235947
2022	227465