Year	Number
1960	16668651
1961	16811638
1962	16996837
1963	17151407
1964	17240437
1965	17290198
1966	17311674
1967	17326490
1968	17341054
1969	17354022
1970	17364943
1971	17386328
1972	17419369
1973	17458284
1974	17496378
1975	17545592
1976	17618261
1977	17705159
1978	17800751
1979	17910184
1980	18021609
1981	18122283
1982	18227779
1983	18352165
1984	18463666
1985	18532902
1986	18581293
1987	18615954
1988	18633858
1989	18647540
1990	18652428
1991	18645922
1992	18632165
1993	18629668
1994	18656319
1995	18704434
1996	18756965
1997	18812621
1998	18886752
1999	18983121
2000	19095252
2001	19216986
2002	19349284
2003	19492389
2004	19651712
2005	19840369
2006	20041614
2007	20227004
2008	20380508
2009	20503358
2010	20617116
2011	20703844
2012	20738324
2013	20769001
2014	20835194
2015	20923459
2016	21008187
2017	21079699
2018	21146891
2019	21217704
2020	21267995
2021	21234601
2022	21465707
2023	21641381