Year	% of total exports
1995	27.150118105254478
1996	27.44630519863848
1997	28.509681712896096
1998	27.20072674518771
1999	25.998117373665906
2000	20.43348525477569
2001	22.342213319539656
2002	21.100837266161328
2003	21.48988684013256
2004	15.184618872943826
2005	13.79779089315559
2006	11.507240816950546
2007	11.4793796158274