Year	Number
1960	1769969
1961	1801811
1962	1834494
1963	1868136
1964	1902710
1965	1938210
1966	1974671
1967	2012180
1968	2051032
1969	2090740
1970	2130554
1971	2170224
1972	2209724
1973	2249090
1974	2288254
1975	2327451
1976	2366954
1977	2407218
1978	2449061
1979	2493506
1980	2540986
1981	2591484
1982	2645404
1983	2702739
1984	2763482
1985	2828266
1986	2897280
1987	2970401
1988	3046584
1989	3124090
1990	3231211
1991	3359906
1992	3465959
1993	3570631
1994	3676611
1995	3777340
1996	3881753
1997	3966809
1998	4048557
1999	4141344
2000	4227368
2001	4295144
2002	4371013
2003	4468708
2004	4565463
2005	4660236
2006	4760253
2007	4870553
2008	4987979
2009	5109750
2010	5235369
2011	5364456
2012	5495816
2013	5630110
2014	5769149
2015	5914257
2016	6064194
2017	6216323
2018	6370216
2019	6527547
2020	6687118
2021	6846006
2022	7005320
2023	7167023