Year	% (cumulative)
1971	21.5
2001	47.0639839172363
2002	48.2174911499023
2003	49.0795021057129
2004	33.364990234375
2005	34.2044906616211
2006	35.7297897338867
2007	36.7352409362793
2008	39.3568687438965
2009	40.5558280944824
2010	41.795711517334
2011	42.7026596069336
2012	46.461971282959
2013	41.6412010192871
2014	44.2573318481445
2015	45.3547706604004
2016	46.4734306335449
2017	47.6669883728027
2018	48.3026695251465
2019	49.6182403564453
2020	51.5605506896973
2021	52.3691101074219
2022	53.8625793457031