Year | Value | 2021 | 306,100 | 2020 | 306,130 | 2019 | 306,110 | 2018 | 306,170 | 2017 | 306,190 | 2016 | 306,190 | 2015 | 306,190 | 2014 | 306,190 | 2013 | 306,210 | 2012 | 306,220 | 2011 | 306,230 | 2010 | 306,280 | 2009 | 306,280 | 2008 | 306,300 | 2007 | 306,320 | 2006 | 306,320 | 2005 | 306,330 | 2004 | 306,330 | 2003 | 306,240 | 2002 | 306,290 | 2001 | 306,290 | 2000 | 306,290 | 1999 | 306,290 | 1998 | 306,290 | 1997 | 306,290 | 1996 | 306,290 | 1995 | 306,290 | 1994 | 306,290 | 1993 | 306,290 | 1992 | 306,290 | 1991 | 306,290 | 1990 | 306,290 | 1989 | 306,290 | 1988 | 306,290 | 1987 | 306,290 | 1986 | 306,290 | 1985 | 306,290 | 1984 | 306,290 | 1983 | 306,290 | 1982 | 306,290 | 1981 | 306,290 | 1980 | 306,290 | 1979 | 306,290 | 1978 | 306,290 | 1977 | 306,290 | 1976 | 306,290 | 1975 | 306,290 | 1974 | 306,290 | 1973 | 306,290 | 1972 | 306,290 | 1971 | 306,290 | 1970 | 306,290 | 1969 | 306,290 | 1968 | 306,290 | 1967 | 306,290 | 1966 | 306,290 | 1965 | 306,290 | 1964 | 306,290 | 1963 | 306,290 | 1962 | 306,290 | 1961 | 306,290 |
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