Year | Value | 2022 | 26,686,076 | 2021 | 26,620,167 | 2020 | 26,540,369 | 2019 | 26,439,838 | 2018 | 26,345,959 | 2017 | 26,246,378 | 2016 | 26,101,473 | 2015 | 25,920,851 | 2014 | 25,721,222 | 2013 | 25,497,978 | 2012 | 25,256,879 | 2011 | 24,995,287 | 2010 | 24,705,713 | 2009 | 24,420,391 | 2008 | 24,120,848 | 2007 | 23,792,654 | 2006 | 23,445,080 | 2005 | 23,091,175 | 2004 | 22,722,937 | 2003 | 22,360,977 | 2002 | 22,019,816 | 2001 | 21,687,611 | 2000 | 21,364,727 | 1999 | 21,059,546 | 1998 | 20,757,628 | 1997 | 20,452,566 | 1996 | 20,163,371 | 1995 | 19,896,875 | 1994 | 19,644,741 | 1993 | 19,386,083 | 1992 | 19,098,714 | 1991 | 18,767,313 | 1990 | 18,387,221 | 1989 | 17,978,965 | 1988 | 17,551,998 | 1987 | 17,103,963 | 1986 | 16,647,601 | 1985 | 16,185,837 | 1984 | 15,723,539 | 1983 | 15,262,058 | 1982 | 14,806,031 | 1981 | 14,363,376 | 1980 | 13,932,942 | 1979 | 13,514,087 | 1978 | 13,087,924 | 1977 | 12,642,094 | 1976 | 12,199,539 | 1975 | 11,769,629 | 1974 | 11,348,863 | 1973 | 10,957,545 | 1972 | 10,614,385 | 1971 | 10,316,899 | 1970 | 10,044,427 | 1969 | 9,784,671 | 1968 | 9,538,381 | 1967 | 9,295,034 | 1966 | 9,055,494 | 1965 | 8,820,642 | 1964 | 8,590,218 | 1963 | 8,375,852 | 1962 | 8,184,078 | 1961 | 8,010,915 | 1960 | 7,859,916 |
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