Year	% (cumulative)
1971	33.2241516113281
2001	57.0520896911621
2002	58.4513320922852
2003	57.8771934509277
2004	30.9890995025635
2005	32.2970695495605
2006	32.8628616333008
2007	33.9070281982422
2008	35.8308601379395
2009	37.2594985961914
2010	38.4593200683594
2011	38.7674903869629
2012	42.7955207824707
2013	37.4554405212402
2014	41.0299301147461
2015	41.2968101501465
2016	42.8035888671875
2017	43.354808807373
2018	43.4628295898438
2019	45.4929008483887
2020	46.8165702819824
2021	48.1147384643555
2022	49.1148986816406