| Year | Import and export volume (million ton) | Virtual water (v.w) trade of rice (×108 m3) | ||||
|
| Import | Export | Net-import | v.w import | v.w export | Net-v.w import |
| 1990 | 1252.7 | 0.3 | 1252.4 | 148.94 | 0.03 | 148.91 |
| 1991 | 1236.8 | 0.2 | 1236.6 | 147.05 | 0.02 | 147.03 |
| 1992 | 1058.1 | 0.3 | 1057.8 | 125.8 | 0.035 | 125.765 |
| 1993 | 642.4 | 8.7 | 633.7 | 76.38 | 1.03 | 75.35 |
| 1994 | 729.9 | 10.7 | 719.2 | 86.78 | 1.27 | 85.51 |
| 1995 | 1159 | 1.6 | 1157.4 | 137.8 | 0.19 | 137.6151 |
| 1996 | 824.6 | 0 | 824.6 | 98.04 | 0 | 98.04 |
| 1997 | 186.1 | 0.1 | 186 | 22.12 | 0.011 | 22.109 |
| 1998 | 148.9 | 0.6 | 148.3 | 17.7 | 0.071 | 17.629 |
| 1999 | 44.8 | 0.1 | 44.7 | 5.32 | 0.011 | 5.309 |
| 2000 | 87.6 | 0.3 | 87.3 | 10.41 | 0.03 | 10.38 |
| 2001 | 69 | 45.5 | 23.5 | 8.2 | 5.4 | 2.8041 |
| 2002 | 60.5 | 68.8 | −8.3 | 7.19 | 8.18 | −0.99 |
| 2003 | 42.4 | 223.7 | −181.3 | 5.04 | 26.59 | −21.55 |
| 2004 | 723.3 | 78.4 | 644.9 | 86 | 9.32 | 76.68 |
| 2005 | 351 | 26 | 325 | 41.73 | 3.09 | 38.64 |
| 2006 | 58.4 | 111.4 | −53 | 6.94 | 13.24 | −6.3 |
| 2007 | 8.3 | 233.7 | −225.4 | 0.98 | 27.78 | −26.8 |
| 2012 | 3.2 | 12.6 | −9.4 | 0.38 | 1.49 | −1.11 |
| 2009 | 89.4 | 0.8 | 88.6 | 10.63 | 0.09 | 10.53 |
| 2010 | 123.1 | 27.7 | 95.4 | 14.63 | 3.29 | 11.34 |
| 2011 | 125.8 | 32.8 | 93 | 14.95 | 3.9 | 11.05 |
| 2012 | 370.1 | 0.3 | 369.8 | 44 | 0.03 | 43.97 |
| Total | 9395.4 | 884.6 | 8510.8 | 1117.01 | 105.09 | 1011.9 |