Year	Number
1960	2779327
1961	2858896
1962	2937821
1963	3014885
1964	3095170
1965	3179506
1966	3266436
1967	3354611
1968	3443251
1969	3530958
1970	3619090
1971	3708010
1972	3798109
1973	3890639
1974	3984049
1975	4076751
1976	4166890
1977	4256699
1978	4346522
1979	4433041
1980	4508992
1981	4549173
1982	4599904
1983	4689680
1984	4782219
1985	4876757
1986	4970788
1987	5067200
1988	5170440
1989	5270825
1990	5367179
1991	5461070
1992	5552206
1993	5630987
1994	5693038
1995	5748195
1996	5797140
1997	5842638
1998	5885083
1999	5923852
2000	5958482
2001	5988095
2002	6011275
2003	6026849
2004	6035655
2005	6037817
2006	6034436
2007	6044131
2008	6068099
2009	6091188
2010	6114034
2011	6137349
2012	6161289
2013	6185642
2014	6209526
2015	6231066
2016	6250510
2017	6266654
2018	6276342
2019	6280217
2020	6292731
2021	6314167
2022	6336392
2023	6364943