Year	Number
1960	5067776
1961	5162219
1962	5260605
1963	5361901
1964	5467133
1965	5577258
1966	5690731
1967	5808253
1968	5930668
1969	6056271
1970	6186019
1971	6318053
1972	6451851
1973	6588641
1974	6728597
1975	6873092
1976	7021275
1977	7175780
1978	7338298
1979	7506706
1980	7680285
1981	7857673
1982	8039432
1983	8228195
1984	8421469
1985	8616093
1986	8811491
1987	9006715
1988	9205996
1989	9417638
1990	9647920
1991	9896916
1992	10174760
1993	10453021
1994	10715317
1995	10973325
1996	11220566
1997	11462922
1998	11701802
1999	11936189
2000	12161850
2001	12380071
2002	12593963
2003	12802557
2004	13001504
2005	13186397
2006	13353440
2007	13505086
2008	13645445
2009	13776271
2010	13901487
2011	14016343
2012	14118638
2013	14216663
2014	14323121
2015	14447479
2016	14601718
2017	14777629
2018	14952540
2019	15128288
2020	15368183
2021	15664025
2022	15901334
2023	16084227