Year	Number
1961	743400
1962	804438
1963	867676
1964	952718
1965	996422
1966	1051173
1967	1106713
1968	1178657
1969	1209013
1970	1230200
1971	1277800
1972	1307100
1973	1321000
1974	1337200
1975	1363054
1976	1372400
1977	1399464
1978	1413000
1979	1424500
1980	1473600
1981	1484600
1982	1493600
1983	1495000
1984	1491400
1985	1491200
1986	1484900
1987	1481100
1988	1475400
1989	1458000
1990	1440000
1991	1410000
1992	1390000
1993	1360000
1994	1330000
1995	1311700
1996	1290000
1997	1279000
1998	1274000
1999	1269000
2000	1264000
2001	1264000
2002	1264000
2003	1234650
2004	1205300
2005	1176425