Year | Value | 2022 | 25,142,447 | 2021 | 25,743,417 | 2020 | 26,294,896 | 2019 | 26,792,863 | 2018 | 27,142,541 | 2017 | 27,351,995 | 2016 | 27,401,677 | 2015 | 27,295,248 | 2014 | 27,168,449 | 2013 | 27,070,431 | 2012 | 26,894,594 | 2011 | 26,600,281 | 2010 | 26,264,289 | 2009 | 25,827,530 | 2008 | 25,321,815 | 2007 | 24,857,451 | 2006 | 24,553,432 | 2005 | 24,375,895 | 2004 | 24,262,063 | 2003 | 24,206,414 | 2002 | 24,309,341 | 2001 | 24,580,424 | 2000 | 24,931,391 | 1999 | 25,340,735 | 1998 | 25,820,885 | 1997 | 26,372,086 | 1996 | 27,010,451 | 1995 | 27,740,501 | 1994 | 28,537,705 | 1993 | 29,339,547 | 1992 | 30,101,077 | 1991 | 30,785,375 | 1990 | 31,267,550 | 1989 | 31,558,450 | 1988 | 31,696,044 | 1987 | 31,659,200 | 1986 | 31,522,194 | 1985 | 31,406,635 | 1984 | 31,316,764 | 1983 | 31,170,986 | 1982 | 31,023,613 | 1981 | 30,953,040 | 1980 | 30,916,103 | 1979 | 30,917,318 | 1978 | 30,983,156 | 1977 | 31,089,781 | 1976 | 31,202,287 | 1975 | 31,266,328 | 1974 | 31,282,615 | 1973 | 31,361,674 | 1972 | 31,454,867 | 1971 | 31,503,011 | 1970 | 31,643,065 | 1969 | 31,932,136 | 1968 | 32,270,095 | 1967 | 32,572,500 | 1966 | 32,873,625 | 1965 | 33,203,571 | 1964 | 33,433,220 | 1963 | 33,452,779 | 1962 | 33,356,360 | 1961 | 33,169,874 | 1960 | 32,927,588 |
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