Year	% of merchandise exports
1993	39.88435323713398
1994	40.108482756854556
1998	47.60341520434883
1999	39.948803127746764
2005	49.7952004868709
2006	46.268449095820515
2007	38.30456926579623
2008	1.441146779514942
2009	41.08260930672877
2010	69.50459622664796
2011	68.57966041745367
2012	47.872732246221375