| Year | Value | | 2022 | 270,722,035 | | 2021 | 268,797,414 | | 2020 | 267,963,707 | | 2019 | 266,809,000 | | 2018 | 265,693,362 | | 2017 | 264,310,525 | | 2016 | 263,021,872 | | 2015 | 261,541,059 | | 2014 | 260,051,657 | | 2013 | 258,499,566 | | 2012 | 256,937,296 | | 2011 | 255,655,803 | | 2010 | 255,443,623 | | 2009 | 254,070,351 | | 2008 | 252,488,423 | | 2007 | 250,508,839 | | 2006 | 248,461,043 | | 2005 | 246,524,052 | | 2004 | 244,459,626 | | 2003 | 242,323,786 | | 2002 | 240,205,076 | | 2001 | 238,252,011 | | 2000 | 236,768,513 | | 1999 | 235,410,488 | | 1998 | 234,246,813 | | 1997 | 233,202,101 | | 1996 | 232,100,798 | | 1995 | 230,970,732 | | 1994 | 229,826,492 | | 1993 | 228,553,338 | | 1992 | 227,092,690 | | 1991 | 225,638,239 | | 1990 | 223,992,672 | | 1989 | 222,516,403 | | 1988 | 221,239,703 | | 1987 | 220,012,384 | | 1986 | 218,885,544 | | 1985 | 218,063,510 | | 1984 | 217,480,512 | | 1983 | 216,901,123 | | 1982 | 216,108,018 | | 1981 | 214,994,938 | | 1980 | 213,388,851 | | 1979 | 211,684,252 | | 1978 | 210,029,790 | | 1977 | 208,390,013 | | 1976 | 206,797,629 | | 1975 | 205,212,436 | | 1974 | 203,412,656 | | 1973 | 201,370,363 | | 1972 | 199,161,972 | | 1971 | 196,815,370 | | 1970 | 194,542,726 | | 1969 | 192,231,650 | | 1968 | 189,660,220 | | 1967 | 186,896,344 | | 1966 | 183,954,460 | | 1965 | 180,847,074 | | 1964 | 177,692,774 | | 1963 | 174,590,178 | | 1962 | 171,526,803 | | 1961 | 168,691,456 | | 1960 | 165,936,393 |
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