Year	Number
1960	346586
1961	369470
1962	393900
1963	419945
1964	447752
1965	477316
1966	508877
1967	542524
1968	578448
1969	616641
1970	657414
1971	700884
1972	747293
1973	794791
1974	839329
1975	886362
1976	936102
1977	988484
1978	1043876
1979	1102372
1980	1164234
1981	1229382
1982	1298273
1983	1383355
1984	1493207
1985	1611443
1986	1739224
1987	1877138
1988	2026202
1989	2186642
1990	2360035
1991	2547177
1992	2749447
1993	2935428
1994	3010784
1995	3088076
1996	3167462
1997	3248662
1998	3332060
1999	3417598
2000	3505456
2001	3595320
2002	3687617
2003	3782284
2004	3879516
2005	3978970
2006	4081116
2007	4185884
2008	4293492
2009	4403866
2010	4517078
2011	4633200
2012	4752308
2013	4874477
2014	4999787
2015	5128318
2016	5260153
2017	5395378
2018	5534079
2019	5677921
2020	5828858
2021	5989024
2022	6160327
2023	6344348