Year 2015 = 100 1980 48.5448326249 1981 37.0119187159 1982 35.0855019491 1983 31.372761752 1984 35.0725541488 1985 32.5619863906 1986 32.0574957613 1987 32.8586702822 1988 27.5942517712 1989 38.8503996496 1990 31.0612722606 1991 35.9428591883 1992 33.9441141713 1993 35.3150198604 1994 41.0057709549 1995 41.1043692427 1996 40.2839805466 1997 41.3300081138 1998 39.7405293367 1999 44.1188370648 2000 54.7798820728 2001 71.1912276978 2002 39.0474126086 2003 64.4068359348 2004 72.6872714265 2005 61.3424018375 2006 67.3466136994 2007 78.6150479329 2008 76.7251870305 2009 63.8887579939 2010 62.898364349 2011 71.7792765847 2012 69.2515041746 2013 90.9475468644 2014 97.6375658186 2015 100 2016 117.7715428606 2017 159.6662318866 2018 188.0483932578 2019 169.2895896685 2020 128.1812194512 2021 131.0647655024