| Year | Value | | 2019 | 5,705,555 | | 2018 | 5,706,808 | | 2017 | 5,706,301 | | 2016 | 5,703,179 | | 2015 | 5,697,029 | | 2014 | 5,687,214 | | 2013 | 5,674,334 | | 2012 | 5,660,655 | | 2011 | 5,649,260 | | 2010 | 5,642,214 | | 2009 | 5,640,437 | | 2008 | 5,642,857 | | 2007 | 5,647,115 | | 2006 | 5,649,798 | | 2005 | 5,648,369 | | 2004 | 5,642,190 | | 2003 | 5,631,842 | | 2002 | 5,617,532 | | 2001 | 5,599,856 | | 2000 | 5,579,329 | | 1999 | 5,555,565 | | 1998 | 5,528,514 | | 1997 | 5,499,385 | | 1996 | 5,469,797 | | 1995 | 5,440,810 | | 1994 | 5,413,489 | | 1993 | 5,387,329 | | 1992 | 5,359,996 | | 1991 | 5,328,146 | | 1990 | 5,289,671 | | 1989 | 5,243,272 | | 1988 | 5,190,431 | | 1987 | 5,135,229 | | 1986 | 5,083,360 | | 1985 | 5,038,768 | | 1984 | 5,002,705 | | 1983 | 4,973,446 | | 1982 | 4,948,317 | | 1981 | 4,923,240 | | 1980 | 4,895,029 | | 1979 | 4,863,258 | | 1978 | 4,828,211 | | 1977 | 4,788,208 | | 1976 | 4,741,427 | | 1975 | 4,686,707 | | 1974 | 4,623,133 | | 1973 | 4,551,276 | | 1972 | 4,473,390 | | 1971 | 4,392,743 | | 1970 | 4,311,780 | | 1969 | 4,231,579 | | 1968 | 4,151,839 | | 1967 | 4,071,965 | | 1966 | 3,990,807 | | 1965 | 3,907,745 | | 1964 | 3,822,480 | | 1963 | 3,736,028 | | 1962 | 3,650,519 | | 1961 | 3,568,801 | | 1960 | 3,492,805 |
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