|
| year | imports | change |
| 1980 | 8.82 | NA |
| 1981 | 11.02 | 25.00 % |
| 1982 | 16.53 | 50.00 % |
| 1983 | 16.53 | 0.00 % |
| 1984 | 16.53 | 0.00 % |
| 1985 | 16.53 | 0.00 % |
| 1986 | 16.53 | 0.00 % |
| 1987 | 16.53 | 0.00 % |
| 1988 | 16.53 | 0.00 % |
| 1989 | 15.43 | -6.67 % |
| 1990 | 16.53 | 7.14 % |
| 1991 | 15.43 | -6.67 % |
| 1992 | 16.53 | 7.14 % |
| 1993 | 17.64 | 6.67 % |
| 1994 | 18.74 | 6.25 % |
| 1995 | 20.94 | 11.76 % |
| 1996 | 22.05 | 5.26 % |
| 1997 | 24.25 | 10.00 % |
| 1998 | | NA |
| 1999 | | NA |
| 2000 | | NA |
| 2001 | | NA |
| 2002 | | NA |
| 2003 | | NA |
| 2004 | | NA |
| 2005 | 649.26 | NA |
| 2006 | 834.45 | 28.52 % |
| 2007 | 870.83 | 4.36 % |
| 2008 | 889.57 | 2.15 % |
| 2009 | 916.02 | 2.97 % |
| 2010 | 1,130.97 | 23.47 % |
| 2011 | 1,774.72 | 56.92 % |
|
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