Year	%
2006	3.95454002794938
2007	3.05938058506971
2008	4.33679547147844
2009	4.73959731629681
2010	3.66354687451701
2011	2.93741700834833
2012	3.28720316567911
2013	3.39335992951502
2014	3.27080240326135
2015	3.05632098417855
2016	2.92120388061596
2017	2.3628317385567
2018	2.145224364129
2019	2.2621650345564
2020	3.06942035880795
2021	2.68848835667779