Year Number 2010-01-01 3.8625 2011-01-01 239.5671 2012-01-01 497.0033 2013-01-01 627.8519 2014-01-01 1471.4566 2015-01-01 2031.3712 2016-01-01 3757.3701 2017-01-01 6021.8291