Year	%
2000	43.336175399562435
2001	43.036293578890636
2002	42.80503174656059
2003	42.56919192757383
2004	42.27883426903428
2005	41.90628679435771
2006	41.520124108480715
2007	41.08901515444586
2008	40.63311029477508
2009	40.1600071801581
2010	39.73034831531703
2011	39.38241186043687
2012	39.08155750931324
2013	38.85935269902264
2014	38.66715463515243
2015	38.53417569268554
2016	38.47324003550413
2017	38.42470573926022
2018	38.34917343851888
2019	38.33276094549878