| Year | Value | | 2022 | 13,490,049 | | 2021 | 13,021,574 | | 2020 | 12,578,775 | | 2019 | 12,186,668 | | 2018 | 11,808,359 | | 2017 | 11,423,571 | | 2016 | 11,023,492 | | 2015 | 10,570,661 | | 2014 | 10,099,613 | | 2013 | 9,644,845 | | 2012 | 9,207,137 | | 2011 | 8,794,262 | | 2010 | 8,395,127 | | 2009 | 8,038,771 | | 2008 | 7,729,372 | | 2007 | 7,429,741 | | 2006 | 7,149,573 | | 2005 | 6,897,464 | | 2004 | 6,654,542 | | 2003 | 6,425,914 | | 2002 | 6,213,255 | | 2001 | 5,992,983 | | 2000 | 5,761,526 | | 1999 | 5,527,587 | | 1998 | 5,304,203 | | 1997 | 5,096,360 | | 1996 | 4,897,389 | | 1995 | 4,699,950 | | 1994 | 4,497,684 | | 1993 | 4,279,699 | | 1992 | 4,047,026 | | 1991 | 3,826,130 | | 1990 | 3,662,400 | | 1989 | 3,514,989 | | 1988 | 3,415,162 | | 1987 | 3,347,224 | | 1986 | 3,291,245 | | 1985 | 3,244,090 | | 1984 | 3,203,411 | | 1983 | 3,158,737 | | 1982 | 3,107,964 | | 1981 | 3,057,517 | | 1980 | 3,001,289 | | 1979 | 2,931,095 | | 1978 | 2,859,978 | | 1977 | 2,790,648 | | 1976 | 2,709,923 | | 1975 | 2,629,529 | | 1974 | 2,556,587 | | 1973 | 2,483,786 | | 1972 | 2,412,106 | | 1971 | 2,343,323 | | 1970 | 2,277,767 | | 1969 | 2,214,515 | | 1968 | 2,150,731 | | 1967 | 2,087,819 | | 1966 | 2,029,732 | | 1965 | 1,976,723 | | 1964 | 1,927,851 | | 1963 | 1,884,854 | | 1962 | 1,846,527 | | 1961 | 1,809,825 | | 1960 | 1,777,159 |
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