biannual

The annual values were disaggregated into biannual values. Then the biannual values were disaggregated into quarterly values. Finally the quarterly values were disaggregated into the desired monthly values.

The relative share of agriculture in GDP of the West Bank (calculated on the basis of fixed 1986 prices, and as a two-year average to deal with the major biannual fluctuations in olive production) declined[…].