| 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 | 0.1 | 22.8 | −22.7 | 0.04 | 8.71 | −8.67 |
| 1991 | −22.7 | 26.2 | −48.9 | −8.67 | 10.01 | −18.68 |
| 1992 | −26.1 | 16 | −42.1 | 0.00 | 6.11 | −16.08 |
| 1993 | −3.9 | 10.2 | −14.1 | −1.48 | 3.90 | −5.38 |
| 1994 | −0.3 | 22.2 | −22.5 | −0.11 | 8.48 | −8.59 |
| 1995 | −17.1 | 10 | −27.1 | −6.53 | 3.82 | −10.35 |
| 1996 | 19.4 | 6.6 | 12.8 | 7.41 | 2.52 | 4.89 |
| 1997 | 104.1 | 7.3 | 96.8 | 39.76 | 2.79 | 36.97 |
| 1998 | 280.3 | 6.3 | 274 | 107.07 | 2.41 | 104.66 |
| 1999 | 232.9 | 6.2 | 306.7 | 119.52 | 2.37 | 117.15 |
| 2000 | 425.7 | 6.4 | 419.3 | 162.61 | 2.44 | 160.17 |
| 2001 | 1035.5 | 7.7 | 1027.8 | 395.56 | 2.94 | 392.62 |
| 2002 | 1386.2 | 7.7 | 1378.5 | 529.53 | 2.94 | 526.59 |
| 2003 | 1123.8 | 8.7 | 1115.1 | 429.29 | 3.32 | 425.97 |
| 2004 | 2065.4 | 14.5 | 2050.9 | 788.98 | 5.54 | 783.44 |
| 2005 | 2012.5 | 17 | 1991.5 | 767.25 | 6.49 | 760.75 |
| 2006 | 2642 | 14.6 | 2627.4 | 1009.24 | 5.58 | 1003.67 |
| 2007 | 2812.4 | 19.6 | 2792.8 | 1074.34 | 7.49 | 1066.85 |
| 2012 | 3062.1 | 35.1 | 3027 | 1169.72 | 13.41 | 1156.23 |
| 2009 | 3708.5 | 23.7 | 3684.8 | 1416.65 | 9.05 | 1407.59 |
| 2010 | 5479.9 | 116.4 | 5363.5 | 2093.32 | 44.46 | 2048.86 |
| 2011 | 5264 | 120 | 5144 | 2010.85 | 45.84 | 1965.01 |
| 2012 | 5838 | 130 | 5707.9 | 2230.12 | 49.66 | 2180.46 |
| Total | 37498.7 | 655.2 | 36843.4 | 14334.47 | 250.28 | 14074.21 |