Year	Number
1960	2271887
1961	2287835
1962	2305620
1963	2323804
1964	2342409
1965	2360634
1966	2379611
1967	2398283
1968	2412623
1969	2425568
1970	2443340
1971	2459678
1972	2472966
1973	2487020
1974	2497465
1975	2503551
1976	2508825
1977	2515595
1978	2522345
1979	2527367
1980	2529219
1981	2527328
1982	2524450
1983	2521866
1984	2519813
1985	2520349
1986	2523448
1987	2526516
1988	2527786
1989	2529466
1990	2533756
1991	2540706
1992	2549727
1993	2559006
1994	2568425
1995	2582617
1996	2598070
1997	2609700
1998	2620021
1999	2629626
2000	2639463
2001	2649869
2002	2659320
2003	2667415
2004	2674861
2005	2682791
2006	2692287
2007	2705030
2008	2721812
2009	2737217
2010	2750241
2011	2762387
2012	2773637
2013	2786137
2014	2801192
2015	2821999
2016	2845175
2017	2864553
2018	2879718
2019	2890926
2020	2900148
2021	2913397
2022	2936844
2023	2958942