Year	% net
1999	34.53625
2000	34.873
2001	32.56096
2002	33.99036
2003	34.9146
2005	39.3057
2006	40.51508
2007	45.61216
2008	46.08289
2009	44.32263
2013	53.95368
2014	52.85329
2015	56.13594
2016	55.3803
2017	55.08278
2018	57.76273
2019	56.6328