Year | Value | 2022 | 233,928 | 2021 | 238,793 | 2020 | 240,584 | 2019 | 242,423 | 2018 | 244,728 | 2017 | 248,747 | 2016 | 254,290 | 2015 | 259,440 | 2014 | 262,484 | 2013 | 263,907 | 2012 | 263,307 | 2011 | 259,856 | 2010 | 255,649 | 2009 | 252,186 | 2008 | 250,079 | 2007 | 248,587 | 2006 | 249,021 | 2005 | 251,208 | 2004 | 251,906 | 2003 | 251,996 | 2002 | 252,787 | 2001 | 254,026 | 2000 | 255,957 | 1999 | 257,642 | 1998 | 259,553 | 1997 | 261,553 | 1996 | 264,681 | 1995 | 269,864 | 1994 | 282,694 | 1993 | 292,268 | 1992 | 301,382 | 1991 | 306,211 | 1990 | 309,629 | 1989 | 313,815 | 1988 | 313,771 | 1987 | 308,565 | 1986 | 302,744 | 1985 | 294,235 | 1984 | 280,668 | 1983 | 268,351 | 1982 | 260,936 | 1981 | 258,216 | 1980 | 259,266 | 1979 | 264,332 | 1978 | 271,557 | 1977 | 279,148 | 1976 | 285,910 | 1975 | 291,642 | 1974 | 297,185 | 1973 | 301,521 | 1972 | 304,452 | 1971 | 305,420 | 1970 | 304,436 | 1969 | 302,972 | 1968 | 300,912 | 1967 | 298,355 | 1966 | 295,379 | 1965 | 291,760 | 1964 | 288,048 | 1963 | 282,659 | 1962 | 275,544 | 1961 | 266,068 | 1960 | 253,435 |
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