| Year | Value | | 2022 | 4,813,438 | | 2021 | 4,906,287 | | 2020 | 4,930,324 | | 2019 | 4,877,560 | | 2018 | 4,767,825 | | 2017 | 4,670,379 | | 2016 | 4,497,160 | | 2015 | 4,321,088 | | 2014 | 4,252,022 | | 2013 | 4,174,075 | | 2012 | 4,057,866 | | 2011 | 4,030,299 | | 2010 | 4,029,907 | | 2009 | 3,945,019 | | 2008 | 3,892,606 | | 2007 | 3,853,149 | | 2006 | 3,831,887 | | 2005 | 3,855,312 | | 2004 | 3,897,186 | | 2003 | 3,948,296 | | 2002 | 4,048,502 | | 2001 | 4,203,026 | | 2000 | 4,392,986 | | 1999 | 4,694,791 | | 1998 | 5,077,943 | | 1997 | 5,410,083 | | 1996 | 5,511,345 | | 1995 | 5,333,607 | | 1994 | 5,046,321 | | 1993 | 4,748,292 | | 1992 | 4,484,243 | | 1991 | 4,415,223 | | 1990 | 4,526,187 | | 1989 | 4,533,346 | | 1988 | 4,406,016 | | 1987 | 4,284,525 | | 1986 | 4,185,745 | | 1985 | 4,118,718 | | 1984 | 4,115,434 | | 1983 | 4,144,212 | | 1982 | 4,137,229 | | 1981 | 4,089,685 | | 1980 | 4,026,799 | | 1979 | 3,969,102 | | 1978 | 3,909,257 | | 1977 | 3,838,521 | | 1976 | 3,761,323 | | 1975 | 3,668,077 | | 1974 | 3,537,362 | | 1973 | 3,364,912 | | 1972 | 3,154,271 | | 1971 | 2,919,736 | | 1970 | 2,680,640 | | 1969 | 2,501,387 | | 1968 | 2,355,168 | | 1967 | 2,267,437 | | 1966 | 2,226,583 | | 1965 | 2,204,079 | | 1964 | 2,204,322 | | 1963 | 2,232,110 | | 1962 | 2,252,954 | | 1961 | 2,257,475 | | 1960 | 2,249,901 |
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