Year | Value | 2022 | 3,450,481 | 2021 | 3,422,017 | 2020 | 3,393,383 | 2019 | 3,339,500 | 2018 | 3,256,726 | 2017 | 3,160,594 | 2016 | 3,062,834 | 2015 | 2,953,179 | 2014 | 2,846,138 | 2013 | 2,762,517 | 2012 | 2,696,649 | 2011 | 2,645,796 | 2010 | 2,663,817 | 2009 | 2,646,724 | 2008 | 2,620,438 | 2007 | 2,566,659 | 2006 | 2,473,892 | 2005 | 2,330,308 | 2004 | 2,225,712 | 2003 | 2,212,527 | 2002 | 2,234,283 | 2001 | 2,344,314 | 2000 | 2,577,879 | 1999 | 2,789,687 | 1998 | 2,913,656 | 1997 | 3,002,431 | 1996 | 3,016,537 | 1995 | 2,942,204 | 1994 | 2,830,234 | 1993 | 2,678,487 | 1992 | 2,513,262 | 1991 | 2,377,250 | 1990 | 2,273,372 | 1989 | 2,197,411 | 1988 | 2,183,190 | 1987 | 2,202,623 | 1986 | 2,182,935 | 1985 | 2,123,589 | 1984 | 2,031,684 | 1983 | 1,920,767 | 1982 | 1,837,893 | 1981 | 1,807,807 | 1980 | 1,799,215 | 1979 | 1,773,583 | 1978 | 1,682,954 | 1977 | 1,531,909 | 1976 | 1,367,281 | 1975 | 1,238,932 | 1974 | 1,228,546 | 1973 | 1,360,939 | 1972 | 1,565,339 | 1971 | 1,763,685 | 1970 | 1,923,679 | 1969 | 2,023,439 | 1968 | 2,074,388 | 1967 | 2,119,729 | 1966 | 2,169,409 | 1965 | 2,220,978 | 1964 | 2,265,563 | 1963 | 2,293,615 | 1962 | 2,310,737 | 1961 | 2,324,603 | 1960 | 2,317,680 |
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