Year	Number
1960	1269335
1961	1310755
1962	1351021
1963	1389792
1964	1429508
1965	1470217
1966	1512969
1967	1557436
1968	1602519
1969	1647005
1970	1688395
1971	1726399
1972	1762869
1973	1798005
1974	1831577
1975	1863351
1976	1892650
1977	1920202
1978	1946305
1979	1970412
1980	1990688
1981	1998770
1982	2012493
1983	2041241
1984	2069090
1985	2096173
1986	2121737
1987	2147092
1988	2179600
1989	2216454
1990	2251369
1991	2283962
1992	2314166
1993	2323767
1994	2311757
1995	2295696
1996	2276708
1997	2257865
1998	2241109
1999	2226598
2000	2213746
2001	2200708
2002	2184322
2003	2163000
2004	2137923
2005	2109571
2006	2078375
2007	2048481
2008	2018227
2009	1983754
2010	1947130
2011	1910141
2012	1873305
2013	1836500
2014	1800914
2015	1767577
2016	1736066
2017	1707037
2018	1681395
2019	1659105
2020	1641395
2021	1626626
2022	1610421
2023	1593109