Year	% (cumulative)
1971	2.68986010551453
1981	1.35917997360229
2001	13.2788200378418
2008	13.085129737854
2009	13.2754802703857
2010	2.94284248352051
2011	3.19326162338257
2013	3.43733763694763
2014	3.40443229675293
2015	3.6451301574707
2016	3.91710996627808
2017	4.18138980865479
2018	3.9996600151062
2019	4.18805980682373
2020	4.24494981765747
2021	4.67338991165161
2022	4.68521976470947