|
| year | imports | change |
| 1980 | 2,195.80 | NA |
| 1981 | 2,131.87 | -2.91 % |
| 1982 | 2,414.06 | 13.24 % |
| 1983 | 2,358.95 | -2.28 % |
| 1984 | 2,744.76 | 16.36 % |
| 1985 | 2,566.18 | -6.51 % |
| 1986 | 2,723.81 | 6.14 % |
| 1987 | 2,139.59 | -21.45 % |
| 1988 | 1,867.32 | -12.73 % |
| 1989 | 2,524.29 | 35.18 % |
| 1990 | 2,207.93 | -12.53 % |
| 1991 | 1,507.96 | -31.70 % |
| 1992 | 1,355.84 | -10.09 % |
| 1993 | 1,576.31 | 16.26 % |
| 1994 | 1,336.00 | -15.24 % |
| 1995 | 1,803.60 | 35.00 % |
| 1996 | 3,547.24 | 96.68 % |
| 1997 | 2,216.75 | -37.51 % |
| 1998 | 1,748.27 | -21.13 % |
| 1999 | 1,844.17 | 5.49 % |
| 2000 | 2,401.94 | 30.25 % |
| 2001 | 2,932.15 | 22.07 % |
| 2002 | 12,408.72 | 323.20 % |
| 2003 | 12,235.33 | -1.40 % |
| 2004 | 20,704.71 | 69.22 % |
| 2005 | 28,904.81 | 39.60 % |
| 2006 | 42,133.65 | 45.77 % |
| 2007 | 53,559.11 | 27.12 % |
| 2008 | 43,288.87 | -19.18 % |
| 2009 | 124,405.80 | 187.39 % |
| 2010 | 163,821.10 | 31.68 % |
| 2011 | 192,498.80 | 17.51 % |
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