Year	Number
1960	5211644
1961	5350058
1962	5460644
1963	5580961
1964	5705901
1965	5815854
1966	5939056
1967	6086028
1968	6225195
1969	6360202
1970	6496998
1971	6638882
1972	6785870
1973	6936002
1974	7087957
1975	7359419
1976	7762463
1977	8068941
1978	8268423
1979	8475386
1980	8696660
1981	8933764
1982	9182394
1983	9438480
1984	9697367
1985	9956659
1986	10204818
1987	10426960
1988	10621339
1989	10792000
1990	10934367
1991	11061558
1992	11186606
1993	11291154
1994	11358252
1995	11361220
1996	11245512
1997	11037028
1998	10823516
1999	10619510
2000	10413266
2001	10210933
2002	10018934
2003	9850680
2004	9718834
2005	9624314
2006	9573291
2007	9572368
2008	9622867
2009	9726992
2010	9886094
2011	10100229
2012	10370488
2013	10700395
2014	11074025
2015	11468788
2016	11874029
2017	12279473
2018	12665338
2019	13013432
2020	13316668
2021	13567972
2022	13759806
2023	13886736