Year | Value | 2022 | 33,512,121 | 2021 | 34,038,983 | 2020 | 36,168,340 | 2019 | 38,232,682 | 2018 | 39,272,467 | 2017 | 39,043,620 | 2016 | 38,292,917 | 2015 | 37,186,264 | 2014 | 35,536,875 | 2013 | 33,659,858 | 2012 | 31,517,191 | 2011 | 29,389,960 | 2010 | 27,475,295 | 2009 | 25,699,085 | 2008 | 24,255,950 | 2007 | 22,998,285 | 2006 | 22,089,062 | 2005 | 21,522,034 | 2004 | 21,099,417 | 2003 | 20,835,195 | 2002 | 20,733,525 | 2001 | 20,570,153 | 2000 | 20,372,755 | 1999 | 20,269,192 | 1998 | 20,156,518 | 1997 | 19,830,657 | 1996 | 19,305,147 | 1995 | 18,754,742 | 1994 | 18,183,240 | 1993 | 17,532,354 | 1992 | 16,938,036 | 1991 | 16,415,887 | 1990 | 15,936,401 | 1989 | 15,557,442 | 1988 | 15,144,033 | 1987 | 14,656,924 | 1986 | 14,274,891 | 1985 | 13,903,302 | 1984 | 13,413,371 | 1983 | 12,910,159 | 1982 | 12,512,294 | 1981 | 12,178,790 | 1980 | 11,863,726 | 1979 | 11,645,504 | 1978 | 11,517,722 | 1977 | 11,312,811 | 1976 | 11,006,135 | 1975 | 10,674,635 | 1974 | 10,323,699 | 1973 | 9,959,672 | 1972 | 9,661,331 | 1971 | 9,458,986 | 1970 | 9,281,712 | 1969 | 9,088,354 | 1968 | 8,926,958 | 1967 | 8,811,089 | 1966 | 8,670,824 | 1965 | 8,479,410 | 1964 | 8,269,358 | 1963 | 8,056,673 | 1962 | 7,864,911 | 1961 | 7,777,996 | 1960 | 7,885,227 |
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