| Year | Value | | 2022 | 3,429,298 | | 2021 | 3,470,559 | | 2020 | 3,412,971 | | 2019 | 3,345,712 | | 2018 | 3,278,078 | | 2017 | 3,225,024 | | 2016 | 3,237,194 | | 2015 | 3,308,554 | | 2014 | 3,397,622 | | 2013 | 3,501,318 | | 2012 | 3,628,251 | | 2011 | 3,762,425 | | 2010 | 3,891,878 | | 2009 | 4,007,689 | | 2008 | 4,072,613 | | 2007 | 4,101,334 | | 2006 | 4,097,678 | | 2005 | 4,064,815 | | 2004 | 4,016,698 | | 2003 | 3,963,250 | | 2002 | 3,897,418 | | 2001 | 3,814,111 | | 2000 | 3,665,937 | | 1999 | 3,473,088 | | 1998 | 3,283,928 | | 1997 | 3,117,127 | | 1996 | 2,994,693 | | 1995 | 2,968,943 | | 1994 | 3,009,853 | | 1993 | 3,055,245 | | 1992 | 3,111,119 | | 1991 | 3,179,285 | | 1990 | 3,233,239 | | 1989 | 3,261,566 | | 1988 | 3,284,378 | | 1987 | 3,316,294 | | 1986 | 3,347,373 | | 1985 | 3,384,683 | | 1984 | 3,428,447 | | 1983 | 3,463,104 | | 1982 | 3,473,178 | | 1981 | 3,466,174 | | 1980 | 3,466,572 | | 1979 | 3,465,588 | | 1978 | 3,463,278 | | 1977 | 3,461,750 | | 1976 | 3,434,726 | | 1975 | 3,347,798 | | 1974 | 3,206,602 | | 1973 | 2,956,721 | | 1972 | 2,625,486 | | 1971 | 2,342,225 | | 1970 | 2,162,710 | | 1969 | 2,134,309 | | 1968 | 2,277,562 | | 1967 | 2,511,203 | | 1966 | 2,732,374 | | 1965 | 2,906,050 | | 1964 | 2,987,514 | | 1963 | 2,989,264 | | 1962 | 2,965,565 | | 1961 | 2,932,732 | | 1960 | 2,884,850 |
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