Year	% net
1983	58.93883
1984	60.13256
1988	66.07108
1999	65.86436
2000	72.11046
2003	79.86805
2004	80.51963
2011	99.14333
2012	99.71319
2014	98.79036
2015	98.09886
2016	98.18273
2017	96.33409
2019	96.2984