Year	% (cumulative)
1970	16.6801795959473
1980	26.7942790985107
1990	36.6311798095703
2008	60.0170402526855
2009	59.5642890930176
2011	66.9170074462891
2019	67.82666015625
2020	69.6058578491211
2021	71.835578918457
2022	72.8445587158203