Year	% gross
2010	110.302001953125
2011	110.648002624512
2012	110.258003234863
2013	108.745002746582
2014	108.50700378418
2015	108.46199798584
2016	108.218521118164
2017	108.122940063477
2018	106.343910217285
2019	105.129188537598
2020	103.662147521973
2021	103.19261932373