| Year | Value | | 2022 | 10,486,941 | | 2021 | 10,415,811 | | 2020 | 10,353,442 | | 2019 | 10,278,887 | | 2018 | 10,175,214 | | 2017 | 10,057,698 | | 2016 | 9,923,085 | | 2015 | 9,799,186 | | 2014 | 9,696,110 | | 2013 | 9,600,379 | | 2012 | 9,519,374 | | 2011 | 9,449,213 | | 2010 | 9,378,126 | | 2009 | 9,298,515 | | 2008 | 9,219,637 | | 2007 | 9,148,092 | | 2006 | 9,080,505 | | 2005 | 9,029,572 | | 2004 | 8,993,531 | | 2003 | 8,958,229 | | 2002 | 8,924,958 | | 2001 | 8,895,960 | | 2000 | 8,872,109 | | 1999 | 8,857,874 | | 1998 | 8,850,974 | | 1997 | 8,846,062 | | 1996 | 8,840,998 | | 1995 | 8,826,939 | | 1994 | 8,780,745 | | 1993 | 8,718,561 | | 1992 | 8,668,067 | | 1991 | 8,617,375 | | 1990 | 8,558,835 | | 1989 | 8,492,964 | | 1988 | 8,436,489 | | 1987 | 8,397,804 | | 1986 | 8,369,829 | | 1985 | 8,350,386 | | 1984 | 8,336,605 | | 1983 | 8,329,033 | | 1982 | 8,325,263 | | 1981 | 8,320,503 | | 1980 | 8,310,531 | | 1979 | 8,293,678 | | 1978 | 8,275,599 | | 1977 | 8,251,540 | | 1976 | 8,222,286 | | 1975 | 8,192,437 | | 1974 | 8,159,955 | | 1973 | 8,136,312 | | 1972 | 8,122,300 | | 1971 | 8,098,334 | | 1970 | 8,042,801 | | 1969 | 7,968,072 | | 1968 | 7,912,273 | | 1967 | 7,867,931 | | 1966 | 7,807,797 | | 1965 | 7,733,853 | | 1964 | 7,661,354 | | 1963 | 7,604,328 | | 1962 | 7,561,588 | | 1961 | 7,519,998 | | 1960 | 7,484,656 |
|