|
| year | imports | change |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | 6.81 | NA |
| 1987 | 6.68 | -1.88 % |
| 1988 | 8.66 | 29.70 % |
| 1989 | 7.21 | -16.79 % |
| 1990 | 7.48 | 3.80 % |
| 1991 | 7.75 | 3.66 % |
| 1992 | 13.90 | 79.27 % |
| 1993 | 14.60 | 5.00 % |
| 1994 | 14.60 | 0.00 % |
| 1995 | 14.60 | 0.00 % |
| 1996 | 14.61 | 0.10 % |
| 1997 | 14.60 | -0.10 % |
| 1998 | 15.67 | 7.36 % |
| 1999 | 14.60 | -6.86 % |
| 2000 | 35.94 | 146.20 % |
| 2001 | 17.86 | -50.29 % |
| 2002 | 18.21 | 1.94 % |
| 2003 | 18.67 | 2.51 % |
| 2004 | 19.20 | 2.85 % |
| 2005 | 19.69 | 2.56 % |
| 2006 | 20.22 | 2.69 % |
| 2007 | 20.84 | 3.07 % |
| 2008 | 21.31 | 2.28 % |
| 2009 | 21.93 | 2.91 % |
| 2010 | 22.50 | 2.58 % |
|
|