Year | Value | 2022 | 26,976,649 | 2021 | 27,576,788 | 2020 | 28,239,294 | 2019 | 28,765,413 | 2018 | 29,217,832 | 2017 | 29,560,016 | 2016 | 29,797,341 | 2015 | 29,956,999 | 2014 | 30,115,730 | 2013 | 30,278,200 | 2012 | 30,385,650 | 2011 | 30,391,320 | 2010 | 30,352,116 | 2009 | 30,220,206 | 2008 | 30,030,052 | 2007 | 29,783,406 | 2006 | 29,615,006 | 2005 | 29,607,335 | 2004 | 29,657,031 | 2003 | 29,664,790 | 2002 | 29,712,435 | 2001 | 29,835,130 | 2000 | 29,975,810 | 1999 | 30,134,221 | 1998 | 30,394,822 | 1997 | 30,743,003 | 1996 | 31,150,120 | 1995 | 31,569,310 | 1994 | 31,927,803 | 1993 | 32,155,122 | 1992 | 32,222,780 | 1991 | 32,221,260 | 1990 | 32,178,187 | 1989 | 32,110,581 | 1988 | 32,071,397 | 1987 | 32,119,291 | 1986 | 32,252,428 | 1985 | 32,453,296 | 1984 | 32,668,178 | 1983 | 32,809,233 | 1982 | 32,874,091 | 1981 | 32,919,194 | 1980 | 33,009,016 | 1979 | 33,225,806 | 1978 | 33,591,978 | 1977 | 34,110,557 | 1976 | 34,785,266 | 1975 | 35,489,423 | 1974 | 36,011,569 | 1973 | 36,382,486 | 1972 | 36,677,944 | 1971 | 36,785,403 | 1970 | 36,866,237 | 1969 | 37,297,277 | 1968 | 37,830,324 | 1967 | 38,295,305 | 1966 | 38,734,883 | 1965 | 39,028,266 | 1964 | 39,003,025 | 1963 | 38,796,873 | 1962 | 38,492,741 | 1961 | 38,114,970 | 1960 | 37,723,458 |
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