Year | Value | 2022 | 25,978,767 | 2021 | 25,932,299 | 2020 | 25,866,492 | 2019 | 25,781,753 | 2018 | 25,700,565 | 2017 | 25,612,604 | 2016 | 25,490,399 | 2015 | 25,341,952 | 2014 | 25,184,657 | 2013 | 25,016,370 | 2012 | 24,836,232 | 2011 | 24,636,702 | 2010 | 24,407,103 | 2009 | 24,171,719 | 2008 | 23,907,946 | 2007 | 23,604,801 | 2006 | 23,265,122 | 2005 | 22,902,919 | 2004 | 22,520,794 | 2003 | 22,139,277 | 2002 | 21,772,458 | 2001 | 21,415,893 | 2000 | 21,068,909 | 1999 | 20,732,104 | 1998 | 20,402,668 | 1997 | 20,084,271 | 1996 | 19,790,586 | 1995 | 19,523,823 | 1994 | 19,274,202 | 1993 | 19,022,526 | 1992 | 18,747,591 | 1991 | 18,435,331 | 1990 | 18,078,079 | 1989 | 17,688,500 | 1988 | 17,280,716 | 1987 | 16,854,727 | 1986 | 16,415,237 | 1985 | 15,963,324 | 1984 | 15,502,044 | 1983 | 15,031,986 | 1982 | 14,560,511 | 1981 | 14,100,449 | 1980 | 13,648,297 | 1979 | 13,199,590 | 1978 | 12,746,591 | 1977 | 12,284,915 | 1976 | 11,829,134 | 1975 | 11,379,614 | 1974 | 10,937,669 | 1973 | 10,528,615 | 1972 | 10,168,951 | 1971 | 9,853,465 | 1970 | 9,573,212 | 1969 | 9,315,008 | 1968 | 9,068,769 | 1967 | 8,831,541 | 1966 | 8,610,890 | 1965 | 8,413,933 | 1964 | 8,240,796 | 1963 | 8,094,680 | 1962 | 7,971,412 | 1961 | 7,857,445 | 1960 | 7,750,272 |
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