| Year | Value | | 2022 | 13,795,341 | | 2021 | 13,315,509 | | 2020 | 12,839,995 | | 2019 | 12,375,616 | | 2018 | 11,942,381 | | 2017 | 11,561,138 | | 2016 | 11,231,024 | | 2015 | 10,902,446 | | 2014 | 10,561,680 | | 2013 | 10,266,250 | | 2012 | 10,015,029 | | 2011 | 9,776,952 | | 2010 | 9,530,759 | | 2009 | 9,269,103 | | 2008 | 9,011,070 | | 2007 | 8,756,888 | | 2006 | 8,489,812 | | 2005 | 8,212,115 | | 2004 | 7,936,946 | | 2003 | 7,658,155 | | 2002 | 7,384,978 | | 2001 | 7,132,011 | | 2000 | 6,894,650 | | 1999 | 6,668,461 | | 1998 | 6,455,083 | | 1997 | 6,256,506 | | 1996 | 6,054,065 | | 1995 | 5,835,794 | | 1994 | 5,613,297 | | 1993 | 5,396,584 | | 1992 | 5,177,314 | | 1991 | 4,948,576 | | 1990 | 4,707,789 | | 1989 | 4,464,939 | | 1988 | 4,246,265 | | 1987 | 4,049,938 | | 1986 | 3,872,020 | | 1985 | 3,726,190 | | 1984 | 3,618,238 | | 1983 | 3,543,537 | | 1982 | 3,497,662 | | 1981 | 3,457,557 | | 1980 | 3,421,087 | | 1979 | 3,396,018 | | 1978 | 3,376,110 | | 1977 | 3,347,939 | | 1976 | 3,294,318 | | 1975 | 3,232,704 | | 1974 | 3,175,430 | | 1973 | 3,112,677 | | 1972 | 3,044,723 | | 1971 | 2,977,892 | | 1970 | 2,913,747 | | 1969 | 2,850,251 | | 1968 | 2,787,854 | | 1967 | 2,725,248 | | 1966 | 2,657,374 | | 1965 | 2,583,293 | | 1964 | 2,505,564 | | 1963 | 2,425,174 | | 1962 | 2,344,458 | | 1961 | 2,270,247 | | 1960 | 2,202,931 |
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