|
| year | imports | change |
| 1980 | 71.65 | NA |
| 1981 | 52.91 | -26.15 % |
| 1982 | 67.24 | 27.08 % |
| 1983 | 48.50 | -27.87 % |
| 1984 | 45.19 | -6.82 % |
| 1985 | 36.38 | -19.51 % |
| 1986 | 30.86 | -15.15 % |
| 1987 | 30.86 | 0.00 % |
| 1988 | 17.64 | -42.86 % |
| 1989 | 12.13 | -31.25 % |
| 1990 | 19.84 | 63.64 % |
| 1991 | 12.13 | -38.89 % |
| 1992 | 13.23 | 9.09 % |
| 1993 | 16.53 | 25.00 % |
| 1994 | 18.74 | 13.33 % |
| 1995 | 18.74 | 0.00 % |
| 1996 | 18.74 | 0.00 % |
| 1997 | 18.74 | 0.00 % |
| 1998 | 14.22 | -24.12 % |
| 1999 | 12.46 | -12.40 % |
| 2000 | 2.87 | -76.99 % |
| 2001 | 4.52 | 57.69 % |
| 2002 | 27.56 | 509.76 % |
| 2003 | 14.33 | -48.00 % |
| 2004 | 28.55 | 99.23 % |
| 2005 | 26.68 | -6.56 % |
| 2006 | 15.54 | -41.74 % |
| 2007 | 12.35 | -20.57 % |
| 2008 | 9.15 | -25.89 % |
| 2009 | 2.20 | -75.90 % |
| 2010 | | NA |
| 2011 | | NA |
|
|