Year 2015 = 100 1990 14.4331308777 1991 13.8500517012 1992 14.5463676389 1993 17.4590417611 1994 18.7446560014 1995 20.0438853596 1996 22.8799801312 1997 24.2015045542 1998 25.8891840084 1999 26.2457226115 2000 26.5328206149 2001 27.0747948671 2002 25.9696298729 2003 33.0813068173 2004 37.5433686714 2005 39.1494345305 2006 41.9648959109 2007 48.3015178326 2008 54.0157777418 2009 65.1437908935 2010 68.4082834617 2011 73.0159826415 2012 81.0511765177 2013 87.5797858963 2014 99.3892881246 2015 100 2016 90.3528809688 2017 87.2102919591 2018 101.549734691 2019 102.0509564677 2020 86.2180307205 2021 93.4457101145