Year	Number
1960	603175
1961	611597
1962	620860
1963	631509
1964	645417
1965	661284
1966	675318
1967	688099
1968	701040
1969	713652
1970	725983
1971	740689
1972	757779
1973	776579
1974	797066
1975	817885
1976	839170
1977	861052
1978	883569
1979	906482
1980	929919
1981	953915
1982	978198
1983	1003832
1984	1031377
1985	1061494
1986	1094092
1987	1120381
1988	1092274
1989	1056617
1990	1075168
1991	1108519
1992	1138046
1993	1163325
1994	1199678
1995	1242795
1996	1282910
1997	1326354
1998	1350266
1999	1378857
2000	1435413
2001	1497398
2002	1567033
2003	1639050
2004	1702253
2005	1758091
2006	1813157
2007	1869061
2008	1929060
2009	1992651
2010	2063847
2011	2142852
2012	2224242
2013	2305339
2014	2365612
2015	2406479
2016	2428830
2017	2421266
2018	2403534
2019	2391217
2020	2381538
2021	2371730
2022	2362295
2023	2350838