Year | Value | 2022 | 34,865,497 | 2021 | 35,489,280 | 2020 | 37,751,562 | 2019 | 39,978,280 | 2018 | 41,169,717 | 2017 | 41,055,544 | 2016 | 40,370,447 | 2015 | 39,278,721 | 2014 | 37,532,244 | 2013 | 35,400,588 | 2012 | 32,842,431 | 2011 | 30,249,032 | 2010 | 27,930,729 | 2009 | 25,807,201 | 2008 | 24,112,932 | 2007 | 22,744,896 | 2006 | 21,775,387 | 2005 | 21,080,280 | 2004 | 20,533,578 | 2003 | 20,153,934 | 2002 | 19,925,679 | 2001 | 19,704,861 | 2000 | 19,575,091 | 1999 | 19,603,727 | 1998 | 19,633,658 | 1997 | 19,470,533 | 1996 | 19,066,628 | 1995 | 18,552,441 | 1994 | 18,009,364 | 1993 | 17,443,072 | 1992 | 16,935,191 | 1991 | 16,490,939 | 1990 | 16,110,026 | 1989 | 15,831,886 | 1988 | 15,510,741 | 1987 | 15,116,623 | 1986 | 14,826,865 | 1985 | 14,538,735 | 1984 | 14,120,057 | 1983 | 13,676,227 | 1982 | 13,339,248 | 1981 | 13,078,752 | 1980 | 12,820,135 | 1979 | 12,616,126 | 1978 | 12,473,576 | 1977 | 12,236,326 | 1976 | 11,884,621 | 1975 | 11,538,590 | 1974 | 11,243,170 | 1973 | 10,982,146 | 1972 | 10,793,949 | 1971 | 10,705,171 | 1970 | 10,632,331 | 1969 | 10,493,786 | 1968 | 10,339,712 | 1967 | 10,214,244 | 1966 | 10,041,055 | 1965 | 9,776,743 | 1964 | 9,472,953 | 1963 | 9,157,610 | 1962 | 8,858,041 | 1961 | 8,671,102 | 1960 | 8,693,687 |
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