Year	Number
1960	588271
1961	601006
1962	614036
1963	627347
1964	640967
1965	654843
1966	670169
1967	691880
1968	714325
1969	737434
1970	761324
1971	785988
1972	811487
1973	837739
1974	864879
1975	892898
1976	921865
1977	951688
1978	982519
1979	1014349
1980	1047256.0000000001
1981	1081135
1982	1116160
1983	1152319
1984	1190764
1985	1233560
1986	1277956
1987	1323951
1988	1371667
1989	1420964
1990	1472105
1991	1525087
1992	1580052
1993	1636839
1994	1686610
1995	1700091
1996	1713700
1997	1727379
1998	1741186
1999	1755104
2000	1769153
2001	1783275
2002	1797529
2003	1811897
2004	1828955
2005	1858568
2006	1888701
2007	1919324
2008	1950485
2009	1982065
2010	2014201
2011	2046858
2012	2080091
2013	2113769
2014	2148041
2015	2182869
2016	2218261
2017	2254227
2018	2290777
2019	2327822
2020	2365201
2021	2402680
2022	2439404
2023	2475446