Year | Value | 2022 | 165,180 | 2021 | 161,375 | 2020 | 159,722 | 2019 | 157,940 | 2018 | 155,216 | 2017 | 151,717 | 2016 | 147,868 | 2015 | 144,475 | 2014 | 141,654 | 2013 | 138,954 | 2012 | 137,226 | 2011 | 137,461 | 2010 | 139,988 | 2009 | 142,939 | 2008 | 144,520 | 2007 | 144,058 | 2006 | 142,590 | 2005 | 142,786 | 2004 | 144,947 | 2003 | 148,166 | 2002 | 151,887 | 2001 | 155,752 | 2000 | 159,847 | 1999 | 164,067 | 1998 | 167,286 | 1997 | 168,130 | 1996 | 166,915 | 1995 | 165,141 | 1994 | 163,379 | 1993 | 162,469 | 1992 | 163,124 | 1991 | 163,895 | 1990 | 162,999 | 1989 | 162,320 | 1988 | 162,549 | 1987 | 161,873 | 1986 | 160,555 | 1985 | 159,134 | 1984 | 157,967 | 1983 | 157,845 | 1982 | 158,533 | 1981 | 158,464 | 1980 | 157,075 | 1979 | 154,393 | 1978 | 150,064 | 1977 | 145,695 | 1976 | 142,416 | 1975 | 139,445 | 1974 | 137,283 | 1973 | 136,043 | 1972 | 134,520 | 1971 | 131,812 | 1970 | 128,923 | 1969 | 125,521 | 1968 | 124,189 | 1967 | 125,533 | 1966 | 126,121 | 1965 | 126,367 | 1964 | 127,733 | 1963 | 127,586 | 1962 | 123,903 | 1961 | 116,999 | 1960 | 107,674 |
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