| Year | Rice productivity (tons/ha) | Rice production (1000 tons) | Food production (1000 tons) | Food (kg/person/ year) | Pig production (1000 tons) |
| 1985 | 2.77 | 15,859.0 | 16,446.3 | 274.7 | No information |
| 1990 | 3.11 | 19,225.1 | 19,897.7 | 301.4 | No information |
| 1995 | 3.77 | 24,963.7 | 26,142.5 | 363.1 | No information |
| 2000 | 4.29 | 32,529.5 | 34,538.9 | 444.9 | 1418.1 |
| 2005 | 4.89 | 35,832.9 | 39,621.6 | 480.9 | 2288.3 |
| 2010 | 5.54 | 40,005.6 | 44,632.2 | 513.4 | 3036.4 |
| 2015 | 5.60 | 45,105.5 | 50,394.3 | 549.5 | 3491.6 |
| 2016 | 5.55 | 43,609.5 | 48,838.9 | 526.9 | 3664.6 |
| 2017 | 5.55 | 42,839.0 | 47,974.5 | 517.6 | 3700.0 |