Year	% (cumulative)
1981	18
2005	46.103889465332
2006	51.4384994506836
2007	49.3494606018066
2008	49.8220100402832
2010	51.4205207824707
2014	55.1084098815918
2015	56.9203796386719
2016	52.4094200134277
2017	58.4599761962891
2018	59.148120880127
2019	60.8583374023438
2020	62.2928810119629
2021	64.7371292114258
2022	66.6660232543945