Year | Value | 2022 | 323,934,282 | 2021 | 321,202,355 | 2020 | 319,156,718 | 2019 | 317,096,220 | 2018 | 314,992,694 | 2017 | 313,131,952 | 2016 | 311,515,766 | 2015 | 310,143,222 | 2014 | 309,352,674 | 2013 | 309,265,204 | 2012 | 309,645,887 | 2011 | 310,587,835 | 2010 | 312,872,659 | 2009 | 315,804,531 | 2008 | 317,944,782 | 2007 | 319,445,722 | 2006 | 319,870,347 | 2005 | 317,373,433 | 2004 | 312,845,138 | 2003 | 308,068,224 | 2002 | 303,300,517 | 2001 | 298,402,110 | 2000 | 293,445,532 | 1999 | 288,502,437 | 1998 | 283,103,959 | 1997 | 276,717,559 | 1996 | 270,509,939 | 1995 | 265,803,621 | 1994 | 262,702,726 | 1993 | 261,564,041 | 1992 | 261,830,192 | 1991 | 262,490,723 | 1990 | 263,271,573 | 1989 | 263,242,555 | 1988 | 262,032,202 | 1987 | 259,318,887 | 1986 | 255,410,915 | 1985 | 251,496,487 | 1984 | 247,994,731 | 1983 | 245,455,812 | 1982 | 243,016,603 | 1981 | 237,620,248 | 1980 | 229,605,798 | 1979 | 221,456,027 | 1978 | 213,201,503 | 1977 | 206,907,930 | 1976 | 204,428,039 | 1975 | 203,685,788 | 1974 | 202,729,683 | 1973 | 200,408,293 | 1972 | 196,447,290 | 1971 | 192,068,538 | 1970 | 187,113,973 | 1969 | 181,498,001 | 1968 | 175,603,646 | 1967 | 169,332,295 | 1966 | 162,845,073 | 1965 | 155,862,955 | 1964 | 148,803,797 | 1963 | 142,710,071 | 1962 | 137,460,226 | 1961 | 133,602,294 | 1960 | 132,060,704 |
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