Year	Number
1960	1106770
1961	1116299
1962	1121661
1963	1132040
1964	1145639
1965	1158688
1966	1167924
1967	1173089
1968	1173426
1969	1170935
1970	1165508
1971	1160425
1972	1155252
1973	1145243
1974	1131332
1975	1115179
1976	1097162
1977	1078225
1978	1058932
1979	1039119
1980	1020990
1981	1004555
1982	989981
1983	977005
1984	964238
1985	951096
1986	938720
1987	928743
1988	923795
1989	922858
1990	924626
1991	928870
1992	933226
1993	936039
1994	935646
1995	932547
1996	929046
1997	926523
1998	924565
1999	923354
2000	923135
2001	923339
2002	922885
2003	921271
2004	919582
2005	918981
2006	919191
2007	920731
2008	925331
2009	932816
2010	942911
2011	956806
2012	963618
2013	969078
2014	974103
2015	979498
2016	983524
2017	986484
2018	989707
2019	991825
2020	991223
2021	989058
2022	988347
2023	988092