| Year | Value | | 2022 | 11,938,206 | | 2021 | 11,685,322 | | 2020 | 11,467,442 | | 2019 | 11,252,029 | | 2018 | 11,063,442 | | 2017 | 10,890,163 | | 2016 | 10,744,631 | | 2015 | 10,623,984 | | 2014 | 10,543,594 | | 2013 | 10,497,203 | | 2012 | 10,440,443 | | 2011 | 10,340,118 | | 2010 | 10,109,269 | | 2009 | 9,745,579 | | 2008 | 9,435,971 | | 2007 | 9,108,967 | | 2006 | 8,858,751 | | 2005 | 8,909,509 | | 2004 | 9,086,425 | | 2003 | 9,160,564 | | 2002 | 9,235,721 | | 2001 | 9,293,807 | | 2000 | 9,246,735 | | 1999 | 9,138,293 | | 1998 | 9,023,340 | | 1997 | 8,927,966 | | 1996 | 8,865,886 | | 1995 | 8,838,903 | | 1994 | 8,831,781 | | 1993 | 8,857,034 | | 1992 | 8,895,908 | | 1991 | 8,904,699 | | 1990 | 8,883,266 | | 1989 | 8,863,824 | | 1988 | 8,863,902 | | 1987 | 8,890,869 | | 1986 | 8,946,198 | | 1985 | 8,991,413 | | 1984 | 8,819,049 | | 1983 | 8,303,443 | | 1982 | 7,626,027 | | 1981 | 6,943,504 | | 1980 | 6,393,905 | | 1979 | 6,324,401 | | 1978 | 6,770,747 | | 1977 | 7,389,759 | | 1976 | 7,968,855 | | 1975 | 8,389,835 | | 1974 | 8,575,974 | | 1973 | 8,595,005 | | 1972 | 8,560,894 | | 1971 | 8,520,835 | | 1970 | 8,464,764 | | 1969 | 8,362,402 | | 1968 | 8,234,127 | | 1967 | 8,119,517 | | 1966 | 8,020,112 | | 1965 | 7,922,920 | | 1964 | 7,803,286 | | 1963 | 7,660,415 | | 1962 | 7,514,801 | | 1961 | 7,371,357 | | 1960 | 7,210,288 |
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