Year	% (cumulative)
1971	11.6467399597168
2001	56.1040382385254
2010	29.4026355743408
2011	30.7995986938477
2013	31.5715980529785
2014	31.8137474060059
2015	33.3990898132324
2016	61.678638458252
2017	62.5039100646973
2018	63.0344696044922
2019	62.3045883178711
2020	64.8265609741211
2021	63.6817207336426
2022	64.0733032226562