Year Number 2009-01-01 22.5235 2010-01-01 29.0316 2011-01-01 36.7215 2012-01-01 39.7601 2013-01-01 42.0569 2014-01-01 56.1581 2015-01-01 86.2275 2016-01-01 95.4280 2017-01-01 99.1028