|
| year | imports | change |
| 1980 | 551.16 | NA |
| 1981 | 402.34 | -27.00 % |
| 1982 | 422.19 | 4.93 % |
| 1983 | 578.71 | 37.08 % |
| 1984 | 587.53 | 1.52 % |
| 1985 | 1,710.79 | 191.18 % |
| 1986 | 2,128.56 | 24.42 % |
| 1987 | 3,060.02 | 43.76 % |
| 1988 | 3,313.55 | 8.29 % |
| 1989 | 3,994.78 | 20.56 % |
| 1990 | 5,161.02 | 29.19 % |
| 1991 | 4,694.93 | -9.03 % |
| 1992 | 4,964.81 | 5.75 % |
| 1993 | 5,292.20 | 6.59 % |
| 1994 | 5,569.98 | 5.25 % |
| 1995 | 6,654.65 | 19.47 % |
| 1996 | 5,918.31 | -11.07 % |
| 1997 | 6,347.11 | 7.25 % |
| 1998 | 5,636.12 | -11.20 % |
| 1999 | 6,703.16 | 18.93 % |
| 2000 | 7,018.42 | 4.70 % |
| 2001 | 5,298.81 | -24.50 % |
| 2002 | 6,267.74 | 18.29 % |
| 2003 | 5,905.08 | -5.79 % |
| 2004 | 5,794.85 | -1.87 % |
| 2005 | 5,818.00 | 0.40 % |
| 2006 | 6,373.56 | 9.55 % |
| 2007 | 5,272.36 | -17.28 % |
| 2008 | 4,225.16 | -19.86 % |
| 2009 | 5,579.90 | 32.06 % |
| 2010 | 3,057.81 | -45.20 % |
| 2011 | 4,140.28 | 35.40 % |
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