| Year | Value | | 2022 | 7,171,126 | | 2021 | 7,163,648 | | 2020 | 7,156,292 | | 2019 | 7,149,412 | | 2018 | 7,155,947 | | 2017 | 7,176,505 | | 2016 | 7,198,957 | | 2015 | 7,241,895 | | 2014 | 7,323,512 | | 2013 | 7,435,177 | | 2012 | 7,581,191 | | 2011 | 7,750,729 | | 2010 | 7,922,250 | | 2009 | 8,092,619 | | 2008 | 8,256,302 | | 2007 | 8,391,666 | | 2006 | 8,494,560 | | 2005 | 8,561,837 | | 2004 | 8,576,561 | | 2003 | 8,549,165 | | 2002 | 8,500,457 | | 2001 | 8,422,443 | | 2000 | 8,320,008 | | 1999 | 8,224,534 | | 1998 | 8,130,152 | | 1997 | 8,033,171 | | 1996 | 7,972,441 | | 1995 | 7,962,258 | | 1994 | 7,977,189 | | 1993 | 8,007,948 | | 1992 | 8,056,350 | | 1991 | 8,120,001 | | 1990 | 8,169,183 | | 1989 | 8,183,399 | | 1988 | 8,186,161 | | 1987 | 8,181,997 | | 1986 | 8,152,491 | | 1985 | 8,082,413 | | 1984 | 7,978,415 | | 1983 | 7,851,928 | | 1982 | 7,700,068 | | 1981 | 7,535,242 | | 1980 | 7,375,150 | | 1979 | 7,219,042 | | 1978 | 7,067,907 | | 1977 | 6,922,157 | | 1976 | 6,765,235 | | 1975 | 6,593,268 | | 1974 | 6,428,095 | | 1973 | 6,269,341 | | 1972 | 6,105,523 | | 1971 | 6,041,724 | | 1970 | 6,010,286 | | 1969 | 5,880,473 | | 1968 | 5,725,515 | | 1967 | 5,576,415 | | 1966 | 5,431,695 | | 1965 | 5,288,276 | | 1964 | 5,133,220 | | 1963 | 4,964,473 | | 1962 | 4,787,799 | | 1961 | 4,608,233 | | 1960 | 4,438,143 |
|