| Year | Value | | 2022 | 5,149,143 | | 2021 | 5,065,783 | | 2020 | 4,962,899 | | 2019 | 4,873,799 | | 2018 | 4,771,772 | | 2017 | 4,636,145 | | 2016 | 4,458,059 | | 2015 | 4,118,658 | | 2014 | 3,557,878 | | 2013 | 2,982,706 | | 2012 | 2,566,032 | | 2011 | 2,424,629 | | 2010 | 2,656,160 | | 2009 | 3,190,699 | | 2008 | 3,868,431 | | 2007 | 4,487,638 | | 2006 | 4,777,119 | | 2005 | 4,743,803 | | 2004 | 4,503,556 | | 2003 | 4,122,739 | | 2002 | 3,806,790 | | 2001 | 3,652,353 | | 2000 | 3,694,641 | | 1999 | 3,928,325 | | 1998 | 4,269,029 | | 1997 | 4,526,455 | | 1996 | 4,682,697 | | 1995 | 4,755,439 | | 1994 | 4,710,758 | | 1993 | 4,579,594 | | 1992 | 4,343,239 | | 1991 | 4,012,546 | | 1990 | 3,636,999 | | 1989 | 3,306,227 | | 1988 | 3,055,424 | | 1987 | 2,864,750 | | 1986 | 2,741,719 | | 1985 | 2,768,020 | | 1984 | 2,940,434 | | 1983 | 3,112,648 | | 1982 | 3,350,247 | | 1981 | 3,649,421 | | 1980 | 3,825,444 | | 1979 | 3,837,446 | | 1978 | 3,761,142 | | 1977 | 3,662,242 | | 1976 | 3,543,916 | | 1975 | 3,437,555 | | 1974 | 3,335,210 | | 1973 | 3,248,007 | | 1972 | 3,165,431 | | 1971 | 3,080,349 | | 1970 | 2,991,138 | | 1969 | 2,880,436 | | 1968 | 2,735,984 | | 1967 | 2,578,009 | | 1966 | 2,452,557 | | 1965 | 2,320,135 | | 1964 | 2,201,023 | | 1963 | 2,130,867 | | 1962 | 2,077,627 | | 1961 | 2,026,276 | | 1960 | 1,954,370 |
|