Year | Value | 2022 | 29,611,714 | 2021 | 28,915,653 | 2020 | 28,225,177 | 2019 | 27,533,134 | 2018 | 26,846,541 | 2017 | 26,169,542 | 2016 | 25,501,941 | 2015 | 24,850,912 | 2014 | 24,215,976 | 2013 | 23,588,073 | 2012 | 22,966,240 | 2011 | 22,348,158 | 2010 | 21,731,053 | 2009 | 21,117,092 | 2008 | 20,513,599 | 2007 | 19,924,958 | 2006 | 19,350,299 | 2005 | 18,792,171 | 2004 | 18,250,774 | 2003 | 17,724,310 | 2002 | 17,211,934 | 2001 | 16,709,665 | 2000 | 16,216,431 | 1999 | 15,730,885 | 1998 | 15,250,934 | 1997 | 14,778,903 | 1996 | 14,317,454 | 1995 | 13,869,138 | 1994 | 13,436,121 | 1993 | 13,020,100 | 1992 | 12,623,342 | 1991 | 12,245,260 | 1990 | 11,882,762 | 1989 | 11,536,734 | 1988 | 11,206,789 | 1987 | 10,890,514 | 1986 | 10,588,428 | 1985 | 10,297,746 | 1984 | 10,015,017 | 1983 | 9,740,088 | 1982 | 9,470,990 | 1981 | 9,207,310 | 1980 | 8,948,162 | 1979 | 8,692,289 | 1978 | 8,440,919 | 1977 | 8,195,142 | 1976 | 7,955,197 | 1975 | 7,720,859 | 1974 | 7,491,935 | 1973 | 7,268,560 | 1972 | 7,051,090 | 1971 | 6,840,457 | 1970 | 6,639,751 | 1969 | 6,450,324 | 1968 | 6,270,528 | 1967 | 6,099,529 | 1966 | 5,936,461 | 1965 | 5,780,453 | 1964 | 5,630,024 | 1963 | 5,484,252 | 1962 | 5,343,117 | 1961 | 5,206,239 | 1960 | 5,073,342 |
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