Year	% (cumulative)
1999	96.984619140625
2007	98.3349761962891
2008	98.3565902709961
2009	98.3798065185547
2010	98.4496612548828
2011	98.4481582641602
2012	98.4666290283203
2013	98.5252075195312
2014	98.5376586914062
2015	98.506477355957
2016	98.4961471557617
2017	98.4994583129883
2018	98.4909210205078
2019	98.5110015869141
2021	99.5457916259766
2022	99.8294906616211
2023	99.9386825561523