Year | Value | 2019 | 166.82186643516 | 2018 | 162.59755559494 | 2017 | 155.12804457408 | 2016 | 146.04221057347 | 2015 | 135.4157637525 | 2014 | 129.02730580635 | 2013 | 122.09089607667 | 2012 | 115.5930563909 | 2011 | 106.1074271459 | 2010 | 100 | 2009 | 95.685322129667 | 2008 | 89.052484493023 | 2007 | 79.047125992088 | 2006 | 73.140254473596 | 2005 | 69.455870934372 | 2004 | 66.29112971972 | 2003 | 64.083247130315 | 2002 | 59.729002824416 | 2001 | 53.320080821356 | 2000 | 50.329449649937 | 1999 | 44.853494670995 | 1998 | 42.279174649263 | 1997 | 39.107564599286 | 1996 | 36.506366526283 | 1995 | 34.302366322062 | 1994 | 30.548398494547 | 1993 | 26.851173219716 | 1992 | 23.969248833438 | 1991 | 22.284890953789 | 1990 | 20.457183467362 | 1989 | 18.088928505374 | 1988 | 16.819687195355 | 1987 | 13.970470822845 | 1986 | 12.322179305373 | 1985 | 10.833916090568 | 1984 | 8.9935906098956 | 1983 | 7.9631772427267 | 1982 | 7.1375405044938 | 1981 | 6.4413921180193 | 1980 | 5.3653320353011 | 1979 | 4.520687832591 | 1978 | 3.8819676298421 | 1977 | 3.5772695873598 | 1976 | 2.9611903313705 | 1975 | 2.7796535835898 | 1974 | 2.4808203646619 | 1973 | 2.0796937116086 | 1972 | 1.8644683261802 | 1971 | 1.8213686926015 | 1970 | 1.7800421452077 | 1969 | 1.7477174200274 | 1968 | 1.6934337043028 | 1967 | 1.6369677286691 | 1966 | 1.6076436108792 | 1965 | 1.5581335887572 |
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