Year	% of revenue
1994	1.9867263644347186
1995	5.982937869969656
1996	2.6924653058512114
1997	2.8776536082220683
1998	2.5247615344145298
1999	1.9387114429038024
2001	1.9831599643589843
2002	6.026133896708494
2003	3.109660142953393
2004	2.7520926215687243