Cost assumption | If improvement in water use efficiency is costless | Improvement in water use efficiency needs additional investment costs | ||||||
Rate of improvement in WUE | 10% | 20% | 30% | 40% | 10% | 20% | 30% | 40% |
Bangladesh | 1216 | 1098 | 986 | 878 | 1146 | 1013 | 835 | 615 |
India | 8696 | 7335 | 6275 | 5409 | 8175 | 6646 | 4873 | 2845 |
Nepal | 34 | 24 | 17 | 11 | 29 | 17 | −2 | −27 |
Pakistan | 1160 | 910 | 725 | 562 | 986 | 665 | 187 | −447 |
Sri Lanka | 146 | 101 | 75 | 58 | 138 | 91 | 51 | 14 |
Rest of South Asia | 100 | 74 | 53 | 34 | 90 | 60 | 22 | −24 |