Year	Number
1960	2232140
1961	2247010
1962	2261442
1963	2274919
1964	2289993
1965	2312103
1966	2344806
1967	2389760
1968	2447562
1969	2514764
1970	2587752
1971	2667229
1972	2752282
1973	2841513
1974	2934506
1975	3031228
1976	3131033
1977	3232978
1978	3337240
1979	3444159
1980	3554643
1981	3668770
1982	3785141
1983	3904673
1984	4031160
1985	4161143
1986	4290707
1987	4423068
1988	4560601
1989	4704096
1990	4853331
1991	5008078
1992	5166159
1993	5323928
1994	5479680
1995	5629297
1996	5774818
1997	5921729
1998	6069643
1999	6219797
2000	6372054
2001	6525049
2002	6675843
2003	6820055
2004	6953301
2005	7072630
2006	7182298
2007	7286826
2008	7385463
2009	7477206
2010	7561113
2011	7658329
2012	7744389
2013	7799943
2014	7847876
2015	7888710
2016	7927145
2017	7963949
2018	8001144
2019	8040015
2020	8084072
2021	8128325
2022	8172214
2023	8222662