Year | Value | 2022 | 15,382,361 | 2021 | 15,500,247 | 2020 | 15,596,250 | 2019 | 15,676,269 | 2018 | 15,761,689 | 2017 | 15,823,291 | 2016 | 15,922,413 | 2015 | 16,024,464 | 2014 | 16,131,205 | 2013 | 16,279,077 | 2012 | 16,440,194 | 2011 | 16,558,905 | 2010 | 16,698,380 | 2009 | 16,779,136 | 2008 | 16,800,307 | 2007 | 16,718,145 | 2006 | 16,607,468 | 2005 | 16,501,471 | 2004 | 16,343,656 | 2003 | 16,156,112 | 2002 | 16,016,425 | 2001 | 15,924,568 | 2000 | 15,825,135 | 1999 | 15,713,426 | 1998 | 15,583,025 | 1997 | 15,450,111 | 1996 | 15,307,832 | 1995 | 15,189,286 | 1994 | 15,115,442 | 1993 | 15,070,558 | 1992 | 15,002,491 | 1991 | 14,851,997 | 1990 | 14,420,133 | 1989 | 13,855,443 | 1988 | 13,362,642 | 1987 | 12,863,145 | 1986 | 12,481,620 | 1985 | 12,497,803 | 1984 | 12,721,838 | 1983 | 12,853,230 | 1982 | 12,992,395 | 1981 | 13,110,032 | 1980 | 13,095,553 | 1979 | 13,005,055 | 1978 | 12,906,802 | 1977 | 12,841,845 | 1976 | 12,823,294 | 1975 | 12,849,983 | 1974 | 12,886,240 | 1973 | 12,932,890 | 1972 | 12,948,838 | 1971 | 12,851,579 | 1970 | 12,673,767 | 1969 | 12,445,063 | 1968 | 12,203,063 | 1967 | 11,994,001 | 1966 | 11,836,571 | 1965 | 11,689,567 | 1964 | 11,326,966 | 1963 | 10,593,827 | 1962 | 9,698,252 | 1961 | 8,852,311 | 1960 | 8,196,887 |
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