| Year | Value | | 2022 | 2,069,535 | | 2021 | 2,022,492 | | 2020 | 1,973,964 | | 2019 | 1,922,589 | | 2018 | 1,878,166 | | 2017 | 1,838,843 | | 2016 | 1,806,790 | | 2015 | 1,790,262 | | 2014 | 1,791,619 | | 2013 | 1,810,863 | | 2012 | 1,858,005 | | 2011 | 1,907,655 | | 2010 | 1,918,291 | | 2009 | 1,897,321 | | 2008 | 1,855,234 | | 2007 | 1,773,852 | | 2006 | 1,672,320 | | 2005 | 1,594,880 | | 2004 | 1,542,802 | | 2003 | 1,503,051 | | 2002 | 1,479,001 | | 2001 | 1,472,907 | | 2000 | 1,474,042 | | 1999 | 1,467,518 | | 1998 | 1,451,938 | | 1997 | 1,438,729 | | 1996 | 1,436,111 | | 1995 | 1,442,292 | | 1994 | 1,454,350 | | 1993 | 1,470,205 | | 1992 | 1,484,997 | | 1991 | 1,497,159 | | 1990 | 1,508,549 | | 1989 | 1,521,906 | | 1988 | 1,541,421 | | 1987 | 1,571,615 | | 1986 | 1,613,423 | | 1985 | 1,664,595 | | 1984 | 1,694,826 | | 1983 | 1,670,863 | | 1982 | 1,613,912 | | 1981 | 1,555,633 | | 1980 | 1,504,886 | | 1979 | 1,490,241 | | 1978 | 1,535,945 | | 1977 | 1,607,805 | | 1976 | 1,662,716 | | 1975 | 1,693,142 | | 1974 | 1,705,577 | | 1973 | 1,709,562 | | 1972 | 1,712,381 | | 1971 | 1,713,384 | | 1970 | 1,709,943 | | 1969 | 1,702,919 | | 1968 | 1,691,796 | | 1967 | 1,675,739 | | 1966 | 1,658,849 | | 1965 | 1,643,149 | | 1964 | 1,624,115 | | 1963 | 1,601,098 | | 1962 | 1,574,664 | | 1961 | 1,546,887 | | 1960 | 1,518,595 |
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