Year	% (cumulative)
1981	7.59999990463257
1991	8.69999980926514
2006	17.9059200286865
2007	18.9902095794678
2008	19.2201805114746
2010	20.0333194732666
2014	23.0271892547607
2015	23.7070407867432
2016	21.200569152832
2017	25.2617263793945
2018	25.9468765258789
2019	26.1221084594727
2020	26.8089694976807
2021	28.9231376647949
2022	29.5355205535889