Year	% (cumulative)
1980	10.7795696258545
2009	33.6509704589844
2010	36.1044883728027
2011	36.4034004211426
2012	37.760368347168
2014	34.0826568603516
2015	35.4598159790039
2016	36.604320526123
2017	37.8640937805176
2018	38.9846878051758
2019	39.5556106567383
2020	40.4104690551758
2021	40.1155204772949
2022	40.0153961181641