Year	Number
1960	2373751
1961	2420303
1962	2467473
1963	2515239
1964	2564286
1965	2615251
1966	2666600
1967	2718333
1968	2770724
1969	2823545
1970	2877134
1971	2930575
1972	2984312
1973	3039800
1974	3093130
1975	3150160
1976	3217918
1977	3292678
1978	3523460
1979	3975099
1980	4315288
1981	4331258
1982	4328153
1983	4450803
1984	4598178
1985	4769616
1986	4951171
1987	5108882
1988	5086147
1989	4973168
1990	4923304
1991	4712420
1992	4476622
1993	4587437
1994	4797618
1995	4944895
1996	5097332
1997	5247963
1998	5437496
1999	5627830
2000	5821840
2001	6021434
2002	6212269
2003	6366693
2004	6522557
2005	6666514
2006	6783748
2007	7293024
2008	7323458
2009	7314265
2010	7298973
2011	7207934
2012	7270375
2013	7439404
2014	7628987
2015	7811705
2016	8030293
2017	8265845
2018	8480571
2019	8701179
2020	8906671
2021	9090664
2022	9269665
2023	9449071