Year | Value | 2022 | 68,934 | 2021 | 69,205 | 2020 | 69,624 | 2019 | 69,942 | 2018 | 70,080 | 2017 | 70,077 | 2016 | 69,772 | 2015 | 69,132 | 2014 | 68,449 | 2013 | 67,899 | 2012 | 67,377 | 2011 | 66,612 | 2010 | 65,579 | 2009 | 64,445 | 2008 | 63,264 | 2007 | 61,752 | 2006 | 59,589 | 2005 | 56,924 | 2004 | 54,074 | 2003 | 51,389 | 2002 | 49,420 | 2001 | 49,222 | 2000 | 49,071 | 1999 | 48,464 | 1998 | 47,527 | 1997 | 46,756 | 1996 | 46,598 | 1995 | 46,790 | 1994 | 47,768 | 1993 | 49,478 | 1992 | 51,087 | 1991 | 51,495 | 1990 | 50,896 | 1989 | 50,076 | 1988 | 49,163 | 1987 | 48,237 | 1986 | 47,294 | 1985 | 46,279 | 1984 | 45,148 | 1983 | 43,862 | 1982 | 42,381 | 1981 | 40,628 | 1980 | 38,624 | 1979 | 36,461 | 1978 | 34,217 | 1977 | 31,992 | 1976 | 29,943 | 1975 | 28,267 | 1974 | 27,160 | 1973 | 26,801 | 1972 | 27,270 | 1971 | 28,357 | 1970 | 29,722 | 1969 | 30,972 | 1968 | 31,618 | 1967 | 31,346 | 1966 | 30,194 | 1965 | 28,472 | 1964 | 26,553 | 1963 | 24,808 | 1962 | 23,356 | 1961 | 22,536 | 1960 | 22,349 |
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