Year	% (cumulative)
1972	4
1981	4.96723985671997
2005	11.1848602294922
2006	19.9148807525635
2007	17.0745220184326
2008	19.9250392913818
2009	19.7802200317383
2010	20.6787395477295
2011	19.3108901977539
2012	24.3660202026367
2013	25.2169494628906
2014	26.9702606201172
2015	24.5420551300049
2016	68.19580078125
2017	27.5691699981689
2018	15.7496004104614
2019	22.0678291320801
2021	27.7954158782959