| Year | Value | | 2022 | 205,872 | | 2021 | 209,073 | | 2020 | 210,643 | | 2019 | 205,163 | | 2018 | 205,077 | | 2017 | 213,251 | | 2016 | 217,959 | | 2015 | 221,453 | | 2014 | 224,429 | | 2013 | 226,867 | | 2012 | 228,028 | | 2011 | 229,075 | | 2010 | 229,804 | | 2009 | 228,763 | | 2008 | 227,833 | | 2007 | 227,018 | | 2006 | 226,182 | | 2005 | 225,002 | | 2004 | 223,184 | | 2003 | 220,995 | | 2002 | 218,792 | | 2001 | 216,410 | | 2000 | 213,889 | | 1999 | 216,681 | | 1998 | 220,778 | | 1997 | 224,814 | | 1996 | 228,098 | | 1995 | 230,967 | | 1994 | 234,354 | | 1993 | 237,755 | | 1992 | 241,390 | | 1991 | 245,572 | | 1990 | 249,641 | | 1989 | 283,432 | | 1988 | 333,043 | | 1987 | 390,306 | | 1986 | 455,619 | | 1985 | 529,615 | | 1984 | 612,522 | | 1983 | 704,908 | | 1982 | 806,057 | | 1981 | 915,308 | | 1980 | 1,031,210 | | 1979 | 1,071,511 | | 1978 | 1,084,657 | | 1977 | 1,096,732 | | 1976 | 1,106,837 | | 1975 | 1,114,666 | | 1974 | 1,119,990 | | 1973 | 1,122,324 | | 1972 | 1,123,324 | | 1971 | 1,126,145 | | 1970 | 1,132,645 | | 1969 | 1,152,118 | | 1968 | 1,179,241 | | 1967 | 1,208,703 | | 1966 | 1,235,821 | | 1965 | 1,257,467 | | 1964 | 1,273,815 | | 1963 | 1,284,223 | | 1962 | 1,290,658 | | 1961 | 1,297,458 | | 1960 | 1,307,582 |
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