Year	%
2010	2.14098016078258
2011	1.64499555407419
2012	1.45359977173878
2013	1.48473224456689
2014	1.50237950472032
2015	1.49992861153731
2016	1.5769576006293
2017	1.7024307788589
2018	1.73167776169038
2019	1.86600368568285
2020	1.50757622452981
2021	1.54166114935143