Year	Number
1960	964870
1961	959553
1962	951214
1963	941129
1964	932280
1965	923294
1966	914287
1967	905276
1968	896038
1969	886698
1970	876786
1971	868956
1972	870708
1973	872845
1974	874874
1975	876912
1976	878956
1977	881072
1978	883208
1979	885382
1980	887357
1981	890057
1982	892386
1983	891401
1984	889418
1985	886746
1986	883332
1987	879319
1988	874645
1989	869346
1990	862866
1991	850642
1992	832152
1993	812915
1994	797067
1995	801779
1996	810055
1997	815282
1998	823787
1999	831930
2000	839963
2001	847752
2002	845840
2003	851142
2004	852625
2005	851624
2006	849905
2007	847426
2008	844292
2009	839984
2010	835176
2011	831299
2012	827411
2013	823134
2014	819104
2015	814542
2016	808982
2017	802221
2018	794100
2019	784127
2020	770626
2021	757148
2022	748840
2023	734232