Year	% (cumulative)
2001	37.0448913574219
2002	40.4950408935547
2005	42.7614898681641
2008	39.8893203735352
2011	43.4903411865234
2012	45.2791481018066
2013	43.7557601928711
2014	45.9827041625977
2015	48.1863632202148
2016	46.9845199584961
2017	46.3533401489258
2018	49.8858070373535
2019	50.7128944396973