Year | Value | 2021 | 168,091.4 | 2020 | 168,091.4 | 2019 | 168,091.4 | 2018 | 168,071.4 | 2017 | 167,231.4 | 2016 | 167,341.4 | 2015 | 169,381.4 | 2014 | 167,331.4 | 2013 | 165,541.4 | 2012 | 164,301.4 | 2011 | 161,921.4 | 2010 | 160,451.4 | 2009 | 159,231.4 | 2008 | 158,221.4 | 2007 | 157,251.4 | 2006 | 156,351.4 | 2005 | 155,451.4 | 2004 | 154,551.4 | 2003 | 153,651.4 | 2002 | 152,931.4 | 2001 | 151,851.4 | 2000 | 150,951.4 | 1999 | 150,221.4 | 1998 | 149,211.4 | 1997 | 146,701.4 | 1996 | 146,701.4 | 1995 | 146,701.4 | 1994 | 145,201.4 | 1993 | 143,701.4 | 1992 | 143,701.4 | 1991 | 142,201.4 | 1990 | 141,395.7 | 1989 | 140,580 | 1988 | 139,390 | 1987 | 138,200 | 1986 | 137,010 | 1985 | 135,720 | 1984 | 134,530 | 1983 | 133,340 | 1982 | 132,150 | 1981 | 130,970 | 1980 | 128,930 | 1979 | 126,910 | 1978 | 124,990 | 1977 | 122,960 | 1976 | 121,040 | 1975 | 119,020 | 1974 | 116,990 |
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