Year annual % 2011 18.88882316480118 2012 -0.8984939358527839 2013 -0.44349903800411994 2014 -0.08704909309750519 2015 -0.5720615618875513 2016 3.862277300004507 2017 0.9364958731052297 2018 -0.769138727855875 2019 -1.1432654653366114