Year	%
2005	12.7946976817766
2006	12.1287142857308
2007	11.9967024250431
2008	11.6003318847199
2009	10.8398139038407
2010	11.5482423769556
2011	11.212614187492
2012	10.424496236502
2013	9.80449529945923
2014	10.0271381339535
2015	10.1660266444292
2016	11.449679519721
2017	12.4809787364152
2018	12.4873666379903
2019	12.7099958279281
2020	11.8046716942433
2021	12.1533932149137
2022	11.7829272809896