|
| year | imports | change |
| 1980 | | NA |
| 1981 | | NA |
| 1982 | | NA |
| 1983 | | NA |
| 1984 | | NA |
| 1985 | | NA |
| 1986 | | NA |
| 1987 | | NA |
| 1988 | | NA |
| 1989 | | NA |
| 1990 | | NA |
| 1991 | | NA |
| 1992 | 462.97 | NA |
| 1993 | 507.06 | 9.52 % |
| 1994 | 609.58 | 20.22 % |
| 1995 | 848.78 | 39.24 % |
| 1996 | 837.76 | -1.30 % |
| 1997 | 113.54 | -86.45 % |
| 1998 | 774.92 | 582.52 % |
| 1999 | 339.51 | -56.19 % |
| 2000 | 593.04 | 74.68 % |
| 2001 | 509.27 | -14.13 % |
| 2002 | 434.31 | -14.72 % |
| 2003 | 716.50 | 64.97 % |
| 2004 | 1,143.10 | 59.54 % |
| 2005 | 1,482.61 | 29.70 % |
| 2006 | | NA |
| 2007 | | NA |
| 2008 | | NA |
| 2009 | | NA |
| 2010 | | NA |
| 2011 | | NA |
|
|