Year % of commercial service imports 1977 15.90429275158337 1978 15.58274307791352 1979 15.231431646931924 1980 12.68448344635003 1981 19.936962909776085 1982 24.759012481609403 1983 22.14077037803405 1984 23.1719406172694 1985 53.19660290219654 1986 34.342648010321454 1987 35.40876135462432 1988 33.66906474820135 1989 31.973977411934484 1990 30.43499431170703 1991 35.98182216230545 1992 27.697181490899894 1993 31.301430608167962 1994 23.24236691208172 2009 34.707599416162964 2010 36.164722609023734 2011 29.26204234469205 2012 29.738785330096064 2013 30.720130429880243 2014 29.78499533546689 2015 36.585427977146246 2016 43.04146558517711 2017 32.113734358194066 2018 26.103237166177536 2019 25.437409795962125 2020 35.90835547171014