 The reason for the reduced self-financing capacity is a significant increase in the unit costs of ANDA from US$0.21/m³ in 1994 to US$0.46/m³ in 2001, and US$0.63/m³ in 2004.The reason for the important increase of the unit cost in 2004 is not clear, but it could be due to the inauguration of the energy-intensive Río Lempa system that pumps water from the Rio Lempa to San Salvador in that year.Investment levels in water and sanitation in El Salvador stood at about US$20–40m/year from 1995–2001, but declined significantly to less than US$10m/year in 2003-04, compared to annual investment needs of US$50–100m to achieve the Millennium Development Goals.