Year	Number
1960	2055586
1961	2106773
1962	2154102
1963	2200565
1964	2249925
1965	2299709
1966	2346342
1967	2392139
1968	2436946
1969	2478083
1970	2515083
1971	2547407
1972	2574769
1973	2596687
1974	2612336
1975	2625597
1976	2641817
1977	2660983
1978	2683695
1979	2711198
1980	2739953
1981	2767828
1982	2788333
1983	2797928
1984	2803511
1985	2807890
1986	2810446
1987	2810500
1988	2807465
1989	2804365
1990	2801600
1991	2795710
1992	2786594
1993	2770235
1994	2743244
1995	2710346
1996	2673910
1997	2638355
1998	2608047
1999	2582744
2000	2564720
2001	2556263
2002	2556263
2003	2562649
2004	2571806
2005	2583067
2006	2598399
2007	2615945
2008	2635166
2009	2653972
2010	2668914
2011	2681604
2012	2692668
2013	2700798
2014	2704416
2015	2700626
2016	2689774
2017	2673941
2018	2665239
2019	2649343
2020	2627143
2021	2615216
2022	2574957
2023	2514539