Year 2015 = 100 1995 26.5462944625 1996 25.2981853872 1997 27.2685706173 1998 28.8972195699 1999 26.2645273906 2000 29.160466742 2001 25.5310070065 2002 24.5946496088 2003 30.138714407 2004 36.9489672099 2005 44.9989510411 2006 52.9360516729 2007 74.9233196294 2008 87.9836864078 2009 59.7153938854 2010 73.8906366923 2011 98.7356136221 2012 88.5296046088 2013 94.7771759082 2014 109.5456046621 2015 100 2016 105.6174870975 2017 124.9684369514 2018 152.3644440339 2019 158.4966998885 2020 146.2798239013 2021 180.4734426661