| Year | Value | | 2022 | 3,675,732 | | 2021 | 3,567,300 | | 2020 | 3,487,470 | | 2019 | 3,411,207 | | 2018 | 3,330,865 | | 2017 | 3,269,028 | | 2016 | 3,243,256 | | 2015 | 3,265,300 | | 2014 | 3,339,281 | | 2013 | 3,447,029 | | 2012 | 3,620,270 | | 2011 | 3,894,498 | | 2010 | 4,224,604 | | 2009 | 4,585,101 | | 2008 | 4,977,298 | | 2007 | 5,373,695 | | 2006 | 5,707,159 | | 2005 | 5,943,063 | | 2004 | 6,112,481 | | 2003 | 6,254,044 | | 2002 | 6,283,173 | | 2001 | 6,171,812 | | 2000 | 6,041,834 | | 1999 | 5,903,774 | | 1998 | 5,715,885 | | 1997 | 5,545,207 | | 1996 | 5,443,363 | | 1995 | 5,369,288 | | 1994 | 5,294,673 | | 1993 | 5,222,795 | | 1992 | 5,168,656 | | 1991 | 5,113,475 | | 1990 | 5,025,254 | | 1989 | 4,926,879 | | 1988 | 4,804,882 | | 1987 | 4,686,565 | | 1986 | 4,601,092 | | 1985 | 4,585,166 | | 1984 | 4,649,962 | | 1983 | 4,824,648 | | 1982 | 5,092,640 | | 1981 | 5,390,023 | | 1980 | 5,684,220 | | 1979 | 5,928,540 | | 1978 | 6,113,740 | | 1977 | 6,241,090 | | 1976 | 6,289,767 | | 1975 | 6,298,366 | | 1974 | 6,332,956 | | 1973 | 6,321,419 | | 1972 | 6,246,505 | | 1971 | 6,187,714 | | 1970 | 6,075,106 | | 1969 | 5,946,738 | | 1968 | 5,844,125 | | 1967 | 5,696,933 | | 1966 | 5,510,707 | | 1965 | 5,127,414 | | 1964 | 4,458,508 | | 1963 | 3,752,891 | | 1962 | 3,227,864 | | 1961 | 3,078,428 | | 1960 | 3,417,134 |
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