Year	Number
1960	5502242
1961	5607354
1962	5728715
1963	5865272
1964	6032475
1965	6226738
1966	6423224
1967	6616550
1968	6810611
1969	7013554
1970	7232051
1971	7460952
1972	7701489
1973	7961073
1974	8236994
1975	8518174
1976	8787777
1977	9059777
1978	9345072
1979	9639476
1980	9949482
1981	10452536
1982	10969741
1983	11325107
1984	11694456
1985	12069283
1986	12456910
1987	12853020
1988	13243762
1989	13642132
1990	14344570
1991	15108962
1992	15570063
1993	15674799
1994	15821613
1995	16331459
1996	16920842
1997	17623870
1998	18429143
1999	19273891
2000	20153590
2001	21056592
2002	21734761
2003	22356098
2004	23135502
2005	23896223
2006	24626617
2007	25297682
2008	25886576
2009	26388499
2010	26817720
2011	27144948
2012	27414206
2013	27694742
2014	28025116
2015	28422328
2016	28754822
2017	29007005
2018	29241447
2019	29461625
2020	29647369
2021	29846153
2022	30077886
2023	30304827