Year 2015 = 100 1992 7.9790267669 1993 7.489373063 1994 9.7262881201 1995 10.0659387561 1996 11.859098088 1997 9.7853373712 1998 14.1465734787 1999 14.642687241 2000 11.5218419639 2001 17.0817815688 2002 14.9952684634 2003 23.9198536663 2004 23.358817908 2005 30.2264157164 2006 35.990140239 2007 37.0441249746 2008 45.0913630911 2009 47.5259511459 2010 50.1466074889 2011 44.3321594627 2012 60.4808294627 2013 63.6274014344 2014 81.1175131996 2015 100 2016 102.4862978396 2017 94.838335503 2018 87.7645516826 2019 85.3616669438 2020 76.3416409662 2021 78.7731944098