Year	Number
1960	5444876
1961	5480708
1962	5507858
1963	5522114
1964	5532975
1965	5543158
1966	5562575
1967	5585940
1968	5603478
1969	5610240
1970	5613357
1971	5630134
1972	5659115
1973	5675682
1974	5685081
1975	5723161
1976	5795753
1977	5859737
1978	5930916
1979	6007439
1980	6079066
1981	6157370
1982	6228922
1983	6304494
1984	6377993
1985	6447923
1986	6514337
1987	6577693
1988	6638578
1989	6707163
1990	6810393
1991	6920739
1992	6997746
1993	7059651
1994	7116272
1995	7173674
1996	7226074
1997	7274950
1998	7323934
1999	7355477
2000	7381435
2001	7407059
2002	7414777
2003	7410994
2004	7406506
2005	7400093
2006	7397524
2007	7401422
2008	7402118
2009	7391000
2010	7360393
2011	7304091
2012	7224390
2013	7140124
2014	7065107
2015	6995156
2016	6942178
2017	6905510
2018	6872299
2019	6845559
2020	6808717
2021	6704221
2022	6601149
2023	6553774