Year | Value | 2022 | 311,290 | 2021 | 310,624 | 2020 | 318,259 | 2019 | 318,010 | 2018 | 317,860 | 2017 | 319,030 | 2016 | 319,365 | 2015 | 313,544 | 2014 | 304,688 | 2013 | 295,692 | 2012 | 280,557 | 2011 | 261,252 | 2010 | 248,374 | 2009 | 237,742 | 2008 | 222,050 | 2007 | 207,623 | 2006 | 196,493 | 2005 | 187,390 | 2004 | 182,129 | 2003 | 181,642 | 2002 | 184,298 | 2001 | 189,099 | 2000 | 195,139 | 1999 | 200,191 | 1998 | 202,990 | 1997 | 204,198 | 1996 | 204,367 | 1995 | 203,883 | 1994 | 203,607 | 1993 | 204,863 | 1992 | 207,526 | 1991 | 210,263 | 1990 | 211,567 | 1989 | 207,541 | 1988 | 192,314 | 1987 | 169,677 | 1986 | 147,529 | 1985 | 131,284 | 1984 | 129,830 | 1983 | 146,243 | 1982 | 171,156 | 1981 | 195,899 | 1980 | 216,242 | 1979 | 227,228 | 1978 | 230,596 | 1977 | 231,245 | 1976 | 230,818 | 1975 | 228,372 | 1974 | 224,123 | 1973 | 220,145 | 1972 | 216,939 | 1971 | 213,591 | 1970 | 212,814 | 1969 | 212,126 | 1968 | 206,809 | 1967 | 199,192 | 1966 | 190,607 | 1965 | 181,893 | 1964 | 173,700 | 1963 | 166,485 | 1962 | 159,687 | 1961 | 153,767 | 1960 | 149,404 |
|