Year	% (cumulative)
1991	8.14731025695801
2001	15.2270402908325
2006	14.9976816177368
2007	15.2326955795288
2008	14.8938207626343
2009	15.1674585342407
2010	16.9575595855713
2011	18.2533798217773
2012	16.7553310394287
2013	17.4730472564697
2014	18.7892284393311
2015	19.9553298950195
2016	20.3266925811768
2017	20.6887607574463
2018	21.8244743347168
2019	21.3153133392334
2020	21.2829914093018
2021	21.0686283111572
2022	20.6884708404541