Figure 2. Non-Parametric Estimated Efficiency Functions of Sectorial
Public Investments. Colombia, 1980-1994 (US$ million, current prices)
Roads
Figure 3. Non-Parametric Estimated Efficiency Function of Total
Public Investments. Colombia, 1980-1994 (US$ million, current prices)
Notes: For each estimated point, the corresponding 95% confidence limits are represented by a sign ” + ”