Year	Number
1960	79322
1961	79322
1962	79322
1963	79322
1964	79322
1965	159203
1966	159203
1967	159203
1968	159203
1969	159203
1970	263313
1971	263313
1972	263313
1973	263313
1974	263313
1975	383043
1976	404969
1977	426955
1978	448759
1979	463204
1980	469964
1981	479549
1982	489592
1983	503780
1984	522452
1985	539320
1986	563585
1987	593827
1988	629190
1989	668915
1990	710847
1991	758999
1992	820882
1993	892766
1994	1003829
1995	1118486
1996	1246471
1997	1391864
1998	1539283
1999	1655380
2000	1697982
2001	1556254
2002	1402725
2003	1294673
2004	1250415
2005	1197044
2006	1167390
2007	1310027
2008	1288661
2009	1219645
2010	1098821
2011	1056025
2012	974762
2013	967106
2014	918662
2015	866630
2016	823594
2017	758842
2018	722704
2019	675297
2020	648462
2021	577390
2022	540558