Year	Number
1960	612844
1961	629427
1962	646883
1963	664329
1964	684128
1965	701810
1966	716178
1967	731847
1968	748175
1969	764847
1970	782113
1971	800519
1972	809931
1973	816708
1974	832907
1975	851895
1976	871632
1977	892695
1978	915805
1979	940608
1980	971276
1981	1005951
1982	1040466
1983	1076485
1984	1113036
1985	1149490
1986	1185357
1987	1221918
1988	1258573
1989	1295209
1990	1331617
1991	1366484
1992	1402055
1993	1415779
1994	1428394
1995	1457447
1996	1473073
1997	1481688
1998	1493044
1999	1507203
2000	1523370
2001	1543953
2002	1570044
2003	1602151
2004	1641904
2005	1688634
2006	1741840
2007	1801843
2008	1868878
2009	1956812
2010	2053360
2011	2141871
2012	2235446
2013	2333989
2014	2431724
2015	2520426
2016	2599632
2017	2673570
2018	2744007
2019	2810440
2020	2869019
2021	2920467
2022	2966127
2023	3005933