Year 2015 = 100 2000 39.8878958346 2001 41.2764173416 2002 33.6730596564 2003 31.1693670204 2004 28.1781531456 2005 42.1614869504 2006 35.8762124657 2007 33.5802171804 2008 33.2813518716 2009 32.3381249447 2010 34.7700921675 2011 39.8817646143 2012 40.5604618408 2013 47.2125046422 2014 75.3128514769 2015 100 2016 95.819507833 2017 96.9109686633 2018 130.7654296706 2019 95.4989311675 2020 94.3682989876 2021 100.4115360658