Year	% (cumulative)
1981	4.90000009536743
2005	21.8598308563232
2006	21.691650390625
2007	23.8144302368164
2008	24.3071594238281
2010	25.9769401550293
2014	28.7299499511719
2015	30.1010494232178
2016	26.3812694549561
2017	32.428840637207
2018	33.0686378479004
2019	33.0783386230469
2020	34.2704811096191
2021	36.1804122924805
2022	36.8578643798828