Year annual % change 2006 -44.5861508174 2007 52.131603336422614 2009 24.5743671682 2010 -6.788801674242362 2011 -16.4789981112696 2012 24.2167083459256 2013 29.5927917227153 2014 12.7423925558553 2015 -18.0871884395433 2016 8.38572973566958 2017 -1.99081560436475 2018 -7.98268894280988 2019 0.843539384032795 2020 -10.0073143869311 2021 45.0144410509954 2022 -6.64259259614638