Year	Number
1960	1153390
1961	1137969
1962	1126062
1963	1121560
1964	1124546
1965	1131012
1966	1141337
1967	1151179
1968	1152938
1969	1150601
1970	1150110
1971	1150212
1972	1151163
1973	1152423
1974	1151275
1975	1147303
1976	1139677
1977	1128145
1978	1112243
1979	1092365
1980	1067950
1981	1037222
1982	1006211
1983	980976
1984	960547
1985	943614
1986	927182
1987	909728
1988	894520
1989	883706
1990	876121
1991	873502
1992	877914
1993	885673
1994	895570
1995	910124
1996	926979
1997	943144
1998	958733
1999	973360
2000	986459
2001	997298
2002	1005230
2003	1010315
2004	1012557
2005	1012494
2006	1011795
2007	1010436
2008	1008817
2009	1005065
2010	998764
2011	991460
2012	982787
2013	974112
2014	966642
2015	961754
2016	959677
2017	958654
2018	956659
2019	952954
2020	948702
2021	946750
2022	948011
2023	948358