Year 2000 = 100 2008 377.5684208 2009 276.0610252 2010 267.5416366 2011 278.0553825 2012 268.9631789 2013 297.856809 2014 301.9381429 2015 296.9132475 2016 328.174259 2017 360.2404796 2018 397.1841299