Year	Number
1960	20335482
1961	20911805
1962	21493959
1963	22040181
1964	22618783
1965	23262783
1966	23932698
1967	24592301
1968	25215989
1969	25823428
1970	26425796
1971	27037551
1972	27702477
1973	28373343
1974	29034522
1975	29684293
1976	30287591
1977	30913594
1978	31560148
1979	32154473
1980	32495753
1981	32465895
1982	32242329
1983	31933950
1984	31824939
1985	32163811
1986	32752300
1987	33367104
1988	33989973
1989	34597137
1990	35200609
1991	35799045
1992	36357123
1993	36924229
1994	37475789
1995	38053130
1996	38607083
1997	39095934
1998	39545149
1999	40016569
2000	40530975
2001	41078234
2002	41634914
2003	42176306
2004	42767494
2005	43410646
2006	43973751
2007	44396141
2008	44783324
2009	45212632
2010	45566728
2011	45882302
2012	46593281
2013	47439328
2014	48350962
2015	49196945
2016	49990378
2017	50740291
2018	51494626
2019	52235288
2020	52972238
2021	53573713
2022	54041267
2023	54900978