Year	%
2002	35.39804
2003	35.99404
2005	48.05369
2006	30.92617
2007	25.80695
2008	33.75515
2009	33.4092
2010	32.21131
2011	31.98754
2012	30.7745
2013	28.95331
2014	29.01794
2015	32.27339
2016	32.846
2018	30.79019
2019	32.75741
2020	35.82627
2021	34.284