Year	Number
1960	5354870
1961	5562206
1962	5768758
1963	5968407
1964	6142802
1965	6308141
1966	6477551
1967	6649428
1968	6818001
1969	6981385
1970	7142819
1971	7300092
1972	7454483
1973	7608398
1974	7758692
1975	7908919
1976	8059391
1977	8212638
1978	8373084
1979	8538954
1980	8713383
1981	8894779
1982	9077202
1983	9257314
1984	9426146
1985	9577118
1986	9703594
1987	9802055
1988	9876903
1989	9930416
1990	9968706
1991	9999581
1992	10023957
1993	10032118
1994	10019666
1995	9988298
1996	9941534
1997	9888449
1998	9835289
1999	9782182
2000	9728429
2001	9674200
2002	9618580
2003	9562973
2004	9511467
2005	9462944
2006	9417082
2007	9381292
2008	9361798
2009	9365367
2010	9393311
2011	9441974
2012	9501276
2013	9566657
2014	9637704
2015	9707059
2016	9766241
2017	9820809
2018	9872745
2019	9911603
2020	9939593
2021	9956001
2022	9957939
2023	9945929