Year	Number
1960	285352
1961	300359
1962	316177
1963	332829
1964	350382
1965	368809
1966	388232
1967	408087
1968	428363
1969	449585
1970	471891
1971	495303
1972	528508
1973	573161
1974	621656
1975	674254
1976	731385
1977	793178
1978	860289
1979	932388
1980	977824
1981	1025339
1982	1075233
1983	1127555
1984	1182500
1985	1239961
1986	1300299
1987	1358525
1988	1419444
1989	1482916
1990	1549320
1991	1618697
1992	1691283
1993	1766910
1994	1846031
1995	1928694
1996	2015181
1997	2105292
1998	2199565
1999	2298059
2000	2401109
2001	2508477
2002	2620804
2003	2738161
2004	2834061
2005	2905178
2006	2978181
2007	3053018
2008	3129844
2009	3208383
2010	3289005
2011	3371653
2012	3456496
2013	3543232
2014	3632269
2015	3723543
2016	3817241
2017	3913297
2018	4011770
2019	4114029.9999999995
2020	4221532
2021	4335770
2022	4457882
2023	4588666