An indicator, developed by FAO, which represents the quality of the crop growing season. The NRI yearly results take into consideration the precipitation that year, the average precipitation over the period 1986-2000, the seasonality of the main crop-growing season (distinguishing between northern and southern hemispheres), and what areas of the country are wetter. The median of each five year period is provided. Note: due to methodological differences, this variable is not comparable to average precipitation
| Date | Value | Change, % |
|---|---|---|
| 2002 | 1,070 | 16.48% |
| 1997 | 919 | 16.86% |
| 1992 | 786 | -16.72% |
| 1987 | 944 | 0.16% |
| 1982 | 942 | 28.01% |
| 1977 | 736 | -8.32% |
| 1972 | 803 | 1.58% |
| 1967 | 791 |
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