Year	% of revenue
1990	29.058134294727356
1991	25.831752577319588
1992	37.56917456167058
1993	42.7317482730985
1994	43.13557215779825
1995	40.23864055087643
1996	47.62222172523997
1997	45.81262328169425
1998	45.55620279507899
1999	43.48321313246325
2000	31.21776020739102
2001	55.29661046837241
2002	49.58839209061712
2014	57.08547368421053
2015	53.56881089248859
2016	50.41435007749845
2017	46.13761073584712
2018	43.442294570294855
2019	43.77965649067184
2020	46.87381939504881
2021	45.13888522837012
2022	60.699598348777236