Year	Number
1973	816424
1979	791382
1981	874274
1982	897017
1983	698749
1985	691380
1986	702785
1987	930717
1988	956372
1989	922435
1990	877559
1991	929811
1992	981898
1993	1016126
1994	1050607
1995	1111954
1998	1576900
1999	1501368
2000	1416255
2001	1291749
2002	1472819
2004	1041692
2005	870993
2006	734868
2007	530567
2008	388912
2009	338576
2010	279312
2011	372694
2012	350082
2013	283223
2014	242734
2015	182016
2016	264388
2017	363333
2018	178872
2019	75413
2020	50903
2022	65327