Fig. 4. The relationship between populations engaged in agriculture in 1990 and 2000 (A) as a percentage of the total population and (B) as absolute density for districts of Panama. The dashed line indicates a 1:1 relation. Agricultural workers declined as a percentage of the population in 70 of 74 districts. The absolute density of agricultural workers declined in all districts that were largely deforested before 1947 (brown downward-pointing triangles) and tended to remain unchanged in districts that were first deforested after 1947 (green upward-pointing triangles).