Year	Number
1960	2307716
1961	2323852
1962	2342107
1963	2360679
1964	2379663
1965	2398378
1966	2417770
1967	2437072
1968	2452260
1969	2466292
1970	2485417
1971	2503448
1972	2518630
1973	2534840
1974	2547832
1975	2556310
1976	2563772
1977	2572823
1978	2581903
1979	2589435
1980	2593808
1981	2594245
1982	2593359
1983	2592431
1984	2591806
1985	2593343
1986	2597085
1987	2600508
1988	2601730
1989	2603129
1990	2607184
1991	2613591
1992	2621643
1993	2629622
1994	2637754
1995	2650756
1996	2665004
1997	2675291
1998	2684198
1999	2692173
2000	2700153
2001	2708914
2002	2716612
2003	2723159
2004	2729661
2005	2736640
2006	2744985
2007	2756409
2008	2771809
2009	2785879
2010	2797441
2011	2808185
2012	2817935
2013	2828795
2014	2842283
2015	2861483
2016	2882835
2017	2900427
2018	2913918
2019	2923497
2020	2931257
2021	2943337
2022	2966194
2023	2988010