| Year | Value | | 2022 | 3,319,856 | | 2021 | 3,307,476 | | 2020 | 3,295,300 | | 2019 | 3,287,678 | | 2018 | 3,284,064 | | 2017 | 3,276,963 | | 2016 | 3,266,614 | | 2015 | 3,254,990 | | 2014 | 3,242,771 | | 2013 | 3,229,694 | | 2012 | 3,216,582 | | 2011 | 3,203,792 | | 2010 | 3,191,359 | | 2009 | 3,179,191 | | 2008 | 3,166,854 | | 2007 | 3,153,993 | | 2006 | 3,146,720 | | 2005 | 3,144,476 | | 2004 | 3,139,645 | | 2003 | 3,131,771 | | 2002 | 3,120,812 | | 2001 | 3,106,305 | | 2000 | 3,088,675 | | 1999 | 3,068,555 | | 1998 | 3,046,336 | | 1997 | 3,022,117 | | 1996 | 2,996,095 | | 1995 | 2,968,099 | | 1994 | 2,936,872 | | 1993 | 2,902,128 | | 1992 | 2,859,789 | | 1991 | 2,811,994 | | 1990 | 2,762,433 | | 1989 | 2,710,294 | | 1988 | 2,656,391 | | 1987 | 2,602,037 | | 1986 | 2,550,473 | | 1985 | 2,499,574 | | 1984 | 2,447,452 | | 1983 | 2,394,513 | | 1982 | 2,342,097 | | 1981 | 2,307,644 | | 1980 | 2,278,228 | | 1979 | 2,233,679 | | 1978 | 2,185,733 | | 1977 | 2,137,354 | | 1976 | 2,089,979 | | 1975 | 2,043,187 | | 1974 | 1,995,586 | | 1973 | 1,947,836 | | 1972 | 1,900,487 | | 1971 | 1,854,314 | | 1970 | 1,808,694 | | 1969 | 1,764,900 | | 1968 | 1,722,940 | | 1967 | 1,680,708 | | 1966 | 1,638,922 | | 1965 | 1,597,820 | | 1964 | 1,557,949 | | 1963 | 1,520,017 | | 1962 | 1,483,480 | | 1961 | 1,444,897 | | 1960 | 1,404,964 |
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