| Year | Value | | 2022 | 7,481,251 | | 2021 | 7,361,061 | | 2020 | 7,201,850 | | 2019 | 7,050,057 | | 2018 | 6,834,911 | | 2017 | 6,604,732 | | 2016 | 6,357,634 | | 2015 | 5,934,588 | | 2014 | 5,328,750 | | 2013 | 4,739,641 | | 2012 | 4,305,375 | | 2011 | 4,125,077 | | 2010 | 4,292,509 | | 2009 | 4,745,525 | | 2008 | 5,340,983 | | 2007 | 5,928,388 | | 2006 | 6,263,234 | | 2005 | 6,309,508 | | 2004 | 6,148,756 | | 2003 | 5,822,765 | | 2002 | 5,492,156 | | 2001 | 5,290,830 | | 2000 | 5,290,418 | | 1999 | 5,476,002 | | 1998 | 5,780,834 | | 1997 | 6,030,762 | | 1996 | 6,134,267 | | 1995 | 6,061,907 | | 1994 | 5,816,781 | | 1993 | 5,427,576 | | 1992 | 4,916,136 | | 1991 | 4,397,156 | | 1990 | 3,959,042 | | 1989 | 3,611,847 | | 1988 | 3,347,796 | | 1987 | 3,142,878 | | 1986 | 2,978,813 | | 1985 | 2,917,702 | | 1984 | 2,986,522 | | 1983 | 3,101,930 | | 1982 | 3,292,886 | | 1981 | 3,548,915 | | 1980 | 3,739,775 | | 1979 | 3,803,724 | | 1978 | 3,769,486 | | 1977 | 3,700,126 | | 1976 | 3,611,931 | | 1975 | 3,512,639 | | 1974 | 3,413,108 | | 1973 | 3,326,923 | | 1972 | 3,229,793 | | 1971 | 3,108,920 | | 1970 | 2,996,851 | | 1969 | 2,881,289 | | 1968 | 2,743,903 | | 1967 | 2,619,175 | | 1966 | 2,543,054 | | 1965 | 2,478,789 | | 1964 | 2,405,461 | | 1963 | 2,351,223 | | 1962 | 2,308,282 | | 1961 | 2,253,310 | | 1960 | 2,184,678 |
|