Year	% (cumulative)
1992	8.51830005645752
2002	14.5611095428467
2006	16.2133865356445
2007	16.1808395385742
2008	16.4954109191895
2009	16.4733390808105
2010	16.8048992156982
2011	17.4719390869141
2012	17.7051696777344
2013	17.6091403961182
2014	17.5824909210205
2015	17.9622001647949
2016	17.8869094848633
2017	17.6643505096436
2018	17.6564197540283
2019	18.0607204437256
2020	18.2810592651367
2021	18.1296405792236
2022	18.5596103668213