Year	% (cumulative)
1981	9.41456031799316
2001	20.8212890625
2011	30.05592918396
2012	30.410530090332
2013	27.2711696624756
2014	27.6012001037598
2015	33.4365196228027
2016	33.9949607849121
2017	34.640869140625
2018	35.2952919006348
2019	35.9636116027832
2021	38.1519508361816