Year | Value | 2022 | 254,653 | 2021 | 254,060 | 2020 | 248,412 | 2019 | 244,400 | 2018 | 241,593 | 2017 | 239,351 | 2016 | 239,240 | 2015 | 240,965 | 2014 | 241,289 | 2013 | 241,044 | 2012 | 241,768 | 2011 | 243,233 | 2010 | 246,934 | 2009 | 249,554 | 2008 | 250,165 | 2007 | 248,079 | 2006 | 245,091 | 2005 | 242,300 | 2004 | 242,421 | 2003 | 246,325 | 2002 | 254,467 | 2001 | 262,116 | 2000 | 269,605 | 1999 | 278,809 | 1998 | 284,350 | 1997 | 285,110 | 1996 | 283,734 | 1995 | 277,588 | 1994 | 268,563 | 1993 | 255,673 | 1992 | 246,147 | 1991 | 241,939 | 1990 | 242,551 | 1989 | 245,481 | 1988 | 251,105 | 1987 | 257,856 | 1986 | 264,409 | 1985 | 270,551 | 1984 | 277,022 | 1983 | 282,368 | 1982 | 286,342 | 1981 | 288,651 | 1980 | 288,986 | 1979 | 288,167 | 1978 | 285,268 | 1977 | 280,007 | 1976 | 272,214 | 1975 | 262,108 | 1974 | 251,159 | 1973 | 239,611 | 1972 | 228,425 | 1971 | 217,632 | 1970 | 205,923 | 1969 | 191,754 | 1968 | 173,546 | 1967 | 151,917 | 1966 | 130,339 | 1965 | 114,293 | 1964 | 108,205 | 1963 | 112,797 | 1962 | 126,339 | 1961 | 143,904 | 1960 | 161,380 |
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