Year | Value | 2022 | 12,988,013 | 2021 | 12,868,696 | 2020 | 12,748,491 | 2019 | 12,560,339 | 2018 | 12,342,535 | 2017 | 12,121,454 | 2016 | 11,908,338 | 2015 | 11,677,384 | 2014 | 11,451,560 | 2013 | 11,235,349 | 2012 | 11,048,571 | 2011 | 10,904,680 | 2010 | 10,847,885 | 2009 | 10,783,612 | 2008 | 10,755,966 | 2007 | 10,709,582 | 2006 | 10,596,292 | 2005 | 10,304,126 | 2004 | 9,920,589 | 2003 | 9,593,913 | 2002 | 9,255,671 | 2001 | 8,999,330 | 2000 | 9,048,318 | 1999 | 9,229,276 | 1998 | 9,315,091 | 1997 | 9,408,999 | 1996 | 9,485,981 | 1995 | 9,455,765 | 1994 | 9,359,044 | 1993 | 9,245,256 | 1992 | 9,141,377 | 1991 | 9,069,772 | 1990 | 9,032,743 | 1989 | 9,023,143 | 1988 | 9,048,092 | 1987 | 9,100,508 | 1986 | 9,132,252 | 1985 | 9,140,677 | 1984 | 9,149,660 | 1983 | 9,177,293 | 1982 | 9,222,030 | 1981 | 9,286,625 | 1980 | 9,338,361 | 1979 | 9,150,508 | 1978 | 8,601,287 | 1977 | 7,894,303 | 1976 | 7,192,414 | 1975 | 6,626,837 | 1974 | 6,564,645 | 1973 | 7,042,599 | 1972 | 7,686,948 | 1971 | 8,288,327 | 1970 | 8,740,859 | 1969 | 8,946,286 | 1968 | 8,965,240 | 1967 | 8,937,252 | 1966 | 8,902,383 | 1965 | 8,832,165 | 1964 | 8,713,527 | 1963 | 8,581,747 | 1962 | 8,455,466 | 1961 | 8,347,877 | 1960 | 8,256,795 |
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