|
| year | imports | change |
| 1980 | 1.10 | NA |
| 1981 | 2.20 | 100.00 % |
| 1982 | 1.10 | -50.00 % |
| 1983 | 16.53 | 1,400.00 % |
| 1984 | 27.56 | 66.67 % |
| 1985 | 29.76 | 8.00 % |
| 1986 | 61.73 | 107.41 % |
| 1987 | 34.17 | -44.64 % |
| 1988 | 44.09 | 29.03 % |
| 1989 | 82.67 | 87.50 % |
| 1990 | 88.18 | 6.67 % |
| 1991 | 72.75 | -17.50 % |
| 1992 | 79.37 | 9.09 % |
| 1993 | 69.45 | -12.50 % |
| 1994 | 41.89 | -39.68 % |
| 1995 | 72.75 | 73.68 % |
| 1996 | 41.89 | -42.42 % |
| 1997 | 30.86 | -26.32 % |
| 1998 | 94.80 | 207.14 % |
| 1999 | 142.20 | 50.00 % |
| 2000 | 245.15 | 72.40 % |
| 2001 | 383.05 | 56.25 % |
| 2002 | 343.92 | -10.22 % |
| 2003 | 319.01 | -7.24 % |
| 2004 | 365.75 | 14.65 % |
| 2005 | 417.78 | 14.23 % |
| 2006 | 540.13 | 29.29 % |
| 2007 | 714.30 | 32.24 % |
| 2008 | 669.10 | -6.33 % |
| 2009 | 617.29 | -7.74 % |
| 2010 | 728.63 | 18.04 % |
| 2011 | 728.63 | 0.00 % |
|
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