Year % of commercial service exports 1976 3.1067961165048485 1977 1.8224299065420562 1978 2.310469314079424 1979 2.4736842105263204 1980 1.745635910224446 1981 1.8300653594771268 1982 1.7184643510054811 1983 1.6000000000000112 1984 2.0897832817337427 1985 2.930800542740847 1986 2.881844380403452 1987 2.497398543184178 1988 1.3852242744063321 1989 1.4274385408406085 1990 1.5184381778741851 1991 2.564102564102576 1992 2.097064110245655 1993 1.581632653061222 1994 1.6371077762619364 1995 1.541171290180538 1996 1.7886178861788598 1997 2.1543985637342926 1998 2.068723702664803 1999 1.876590330788808 2000 1.8723404255319178 2001 2.191641182466868 2002 2.5162567147299972 2003 2.776982536501581 2004 2.5506555423122785 2005 2.6202934236175217 2006 2.625824658455899 2007 2.442650089530048 2008 2.2744252873563195 2009 2.3199147905510897 2010 2.6005538704998026 2011 2.9563834018295085 2012 2.8508328956759437 2013 2.978792076278592 2014 3.009025784260481 2015 3.761116096924208 2016 4.023668639053256 2017 4.118138092777354 2018 0.9877167056429791 2019 1.0653187901670493 2020 1.4100162859548062 2021 1.296550478404237 2022 1.2728183964117548