Year	% (cumulative)
1980	21.4478397369385
1990	37.9755516052246
1995	63.5104904174805
2005	75.1828308105469
2006	76.0027465820312
2007	77.1057815551758
2008	78.85888671875
2009	78.8356704711914
2010	79.9231033325195
2011	80.5264434814453
2012	80.9864196777344
2013	81.8053665161133
2014	81.9160308837891
2015	82.8825378417969
2016	83.2621612548828
2017	83.462890625
2018	85.0544662475586
2019	85.1992492675781
2020	85.9320373535156
2021	84.8121719360352
2022	85.2641830444336