Year | Value | 2022 | 15,296,629 | 2021 | 15,404,124 | 2020 | 15,481,110 | 2019 | 15,545,702 | 2018 | 15,623,146 | 2017 | 15,681,499 | 2016 | 15,777,259 | 2015 | 15,877,025 | 2014 | 15,975,868 | 2013 | 16,107,846 | 2012 | 16,254,909 | 2011 | 16,358,222 | 2010 | 16,479,572 | 2009 | 16,552,332 | 2008 | 16,574,170 | 2007 | 16,500,748 | 2006 | 16,412,987 | 2005 | 16,343,250 | 2004 | 16,220,039 | 2003 | 16,056,432 | 2002 | 15,935,816 | 2001 | 15,856,856 | 2000 | 15,777,063 | 1999 | 15,689,407 | 1998 | 15,567,711 | 1997 | 15,437,869 | 1996 | 15,296,085 | 1995 | 15,167,802 | 1994 | 15,069,539 | 1993 | 14,998,407 | 1992 | 14,906,134 | 1991 | 14,735,881 | 1990 | 14,304,021 | 1989 | 13,755,270 | 1988 | 13,275,527 | 1987 | 12,786,980 | 1986 | 12,412,283 | 1985 | 12,423,872 | 1984 | 12,644,558 | 1983 | 12,781,771 | 1982 | 12,929,420 | 1981 | 13,065,375 | 1980 | 13,079,764 | 1979 | 13,003,097 | 1978 | 12,903,813 | 1977 | 12,841,196 | 1976 | 12,815,851 | 1975 | 12,832,761 | 1974 | 12,878,246 | 1973 | 12,953,256 | 1972 | 13,030,071 | 1971 | 13,068,440 | 1970 | 13,104,266 | 1969 | 13,135,789 | 1968 | 13,168,328 | 1967 | 13,219,319 | 1966 | 13,259,541 | 1965 | 13,240,986 | 1964 | 12,923,039 | 1963 | 12,137,453 | 1962 | 11,135,838 | 1961 | 10,176,465 | 1960 | 9,432,576 |
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