Year	%
2002	38.29942
2003	38.55378
2005	52.35014
2006	33.16303
2007	27.4254
2008	34.10583
2009	34.33259
2010	32.87421
2011	32.66484
2012	34.07158
2013	30.67799
2014	30.81542
2015	32.24494
2016	32.64164
2018	34.94585
2019	36.16372
2020	37.7653
2021	36.13456