Year	% (cumulative)
1972	10.7164096832275
2005	9.88852024078369
2006	31.4351501464844
2007	28.2231693267822
2008	30.9477596282959
2009	31.2762508392334
2010	32.0123100280762
2011	33.5679512023926
2012	32.313419342041
2013	32.5274200439453
2014	34.1788482666016
2015	32.5294494628906
2016	51.0792083740234
2017	33.3356704711914
2018	10.5381603240967
2019	12.6821699142456
2021	33.8673210144043