|
| year | imports | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 1.96 | NA |
| 1987 | 1.39 | -29.17 % |
| 1988 | 3.37 | 142.65 % |
| 1989 | 2.92 | -13.33 % |
| 1990 | 3.58 | 22.38 % |
| 1991 | 3.43 | -4.00 % |
| 1992 | 2.91 | -15.11 % |
| 1993 | 3.06 | 4.90 % |
| 1994 | 3.06 | 0.00 % |
| 1995 | 3.06 | 0.00 % |
| 1996 | 3.06 | 0.00 % |
| 1997 | 3.12 | 2.00 % |
| 1998 | 3.17 | 1.58 % |
| 1999 | 3.17 | 0.00 % |
| 2000 | 3.20 | 1.01 % |
| 2001 | 3.27 | 2.19 % |
| 2002 | 3.31 | 1.25 % |
| 2003 | 3.33 | 0.62 % |
| 2004 | 3.36 | 0.95 % |
| 2005 | 3.41 | 1.49 % |
| 2006 | 3.47 | 1.80 % |
| 2007 | 4.11 | 18.24 % |
| 2008 | 4.61 | 12.21 % |
| 2009 | 4.44 | -3.78 % |
| 2010 | 4.44 | 0.00 % |
|
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