Year	% (cumulative)
1991	6.41926002502441
2001	13.958930015564
2006	14.1880159378052
2007	14.1277093887329
2008	14.4449224472046
2009	15.3904752731323
2010	16.7031078338623
2011	18.2915592193604
2012	16.620698928833
2013	17.8137111663818
2014	19.0640392303467
2015	20.5588092803955
2016	20.9525012969971
2017	21.5873222351074
2018	22.835412979126
2019	22.5772476196289
2020	22.9585609436035
2021	22.8622570037842
2022	22.746280670166