|
| year | imports | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 20.06 | NA |
| 1987 | 22.03 | 9.84 % |
| 1988 | 20.39 | -7.43 % |
| 1989 | 20.70 | 1.50 % |
| 1990 | 21.86 | 5.61 % |
| 1991 | 21.56 | -1.37 % |
| 1992 | 20.30 | -5.82 % |
| 1993 | 24.51 | 20.72 % |
| 1994 | 24.72 | 0.85 % |
| 1995 | 27.28 | 10.36 % |
| 1996 | 22.74 | -16.65 % |
| 1997 | 22.64 | -0.43 % |
| 1998 | 22.38 | -1.15 % |
| 1999 | 23.80 | 6.34 % |
| 2000 | 25.73 | 8.11 % |
| 2001 | 28.06 | 9.06 % |
| 2002 | 25.52 | -9.05 % |
| 2003 | 26.70 | 4.62 % |
| 2004 | 24.97 | -6.47 % |
| 2005 | 25.96 | 3.96 % |
| 2006 | 25.06 | -3.47 % |
| 2007 | 24.35 | -2.82 % |
| 2008 | 22.74 | -6.64 % |
| 2009 | 17.22 | -24.27 % |
| 2010 | 23.62 | 37.17 % |
|
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