Year | Value | 2022 | 153,273 | 2021 | 156,070 | 2020 | 158,284 | 2019 | 161,365 | 2018 | 165,180 | 2017 | 169,023 | 2016 | 171,983 | 2015 | 174,110 | 2014 | 175,400 | 2013 | 175,534 | 2012 | 174,759 | 2011 | 173,094 | 2010 | 170,905 | 2009 | 167,255 | 2008 | 163,235 | 2007 | 159,123 | 2006 | 155,006 | 2005 | 151,245 | 2004 | 147,435 | 2003 | 142,959 | 2002 | 137,670 | 2001 | 130,721 | 2000 | 122,186 | 1999 | 111,906 | 1998 | 99,081 | 1997 | 84,640 | 1996 | 70,938 | 1995 | 60,800 | 1994 | 57,271 | 1993 | 59,934 | 1992 | 68,678 | 1991 | 81,593 | 1990 | 93,393 | 1989 | 100,304 | 1988 | 103,984 | 1987 | 105,181 | 1986 | 104,615 | 1985 | 103,072 | 1984 | 101,935 | 1983 | 101,023 | 1982 | 100,138 | 1981 | 98,965 | 1980 | 97,000 | 1979 | 94,378 | 1978 | 90,377 | 1977 | 84,249 | 1976 | 76,204 | 1975 | 67,205 | 1974 | 58,187 | 1973 | 49,830 | 1972 | 43,078 | 1971 | 37,948 | 1970 | 34,496 | 1969 | 33,121 | 1968 | 33,455 | 1967 | 34,768 | 1966 | 36,166 | 1965 | 37,088 | 1964 | 37,501 | 1963 | 37,410 | 1962 | 37,197 | 1961 | 37,029 | 1960 | 36,973 |
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