Year % 2005 4.40371215061429 2008 3.4828321406596 2009 4.40632545846777 2010 5.31702891281937 2011 -1.26151865604048 2012 4.50391951035432 2013 7.2650484914582 2014 8.07355026882126 2015 10.1669047034253 2016 10.4331869506799 2017 11.997373253489 2018 10.7157998546345 2019 10.9783046101491 2020 8.83237171883536 2021 6.97082251307764 2022 6.92333288644458