| Year | Value | | 2022 | 9,179,213 | | 2021 | 9,123,317 | | 2020 | 8,950,841 | | 2019 | 8,769,561 | | 2018 | 8,519,102 | | 2017 | 8,242,714 | | 2016 | 7,935,773 | | 2015 | 7,415,534 | | 2014 | 6,689,417 | | 2013 | 5,990,181 | | 2012 | 5,458,931 | | 2011 | 5,206,650 | | 2010 | 5,357,878 | | 2009 | 5,840,207 | | 2008 | 6,468,886 | | 2007 | 7,098,628 | | 2006 | 7,472,818 | | 2005 | 7,543,263 | | 2004 | 7,392,863 | | 2003 | 7,070,624 | | 2002 | 6,747,484 | | 2001 | 6,560,745 | | 2000 | 6,582,396 | | 1999 | 6,790,812 | | 1998 | 7,105,611 | | 1997 | 7,349,307 | | 1996 | 7,431,315 | | 1995 | 7,331,022 | | 1994 | 7,053,450 | | 1993 | 6,630,310 | | 1992 | 6,088,555 | | 1991 | 5,545,243 | | 1990 | 5,071,391 | | 1989 | 4,674,716 | | 1988 | 4,323,354 | | 1987 | 4,003,063 | | 1986 | 3,749,939 | | 1985 | 3,629,018 | | 1984 | 3,677,945 | | 1983 | 3,845,220 | | 1982 | 4,137,039 | | 1981 | 4,487,744 | | 1980 | 4,754,582 | | 1979 | 4,865,429 | | 1978 | 4,844,770 | | 1977 | 4,772,727 | | 1976 | 4,674,839 | | 1975 | 4,556,251 | | 1974 | 4,430,125 | | 1973 | 4,320,608 | | 1972 | 4,198,336 | | 1971 | 4,049,229 | | 1970 | 3,914,589 | | 1969 | 3,770,357 | | 1968 | 3,593,348 | | 1967 | 3,424,750 | | 1966 | 3,303,643 | | 1965 | 3,196,868 | | 1964 | 3,084,740 | | 1963 | 2,996,356 | | 1962 | 2,918,646 | | 1961 | 2,831,703 | | 1960 | 2,737,315 |
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