Year 2015 = 100 1980 7.9547444539 1981 14.3746177866 1982 14.8588900761 1983 16.8189112195 1984 17.6217759474 1985 18.1753515872 1986 18.826809614 1987 26.5582087237 1988 38.1348470291 1989 30.7290132319 1990 27.470413639 1991 13.1801907716 1992 13.6259975768 1993 13.4452425275 1994 16.7262666859 1995 18.4647811987 1996 20.4778683095 1997 20.7806650499 1998 25.428948934 1999 25.2022839552 2000 22.9313225512 2001 21.0399770338 2002 20.0865825628 2003 20.3699625612 2004 25.0888728114 2005 35.3116525523 2006 42.942083244 2007 58.357190036 2008 76.1026520315 2009 70.6982414104 2010 83.2460251012 2011 92.6523421426 2012 108.8498442651 2013 104.0986158793 2014 105.0523798955 2015 100 2016 87.7544279109 2017 96.9374272357 2018 113.2538458999 2019 111.5534652409 2020 94.1312486258 2021 131.3473432507