Year % 2007 100.818505338078 2008 116.889807162534 2009 114.84028285784 2010 110.13734 2011 122.14797 2012 112.61746 2013 87.2107 2014 84.3434 2015 82.137 2016 88.645 2017 94.3893 2018 79.7003 2019 106.66567 2020 72.67069 2021 89.29452 2022 92.0862912928082