Investment Since the sector was prepared for self-sufficiency, investment increased significantly from an annual average of about US$ 100m in the period 1965 to 1989 to an annual average of US$ 242m in the period 1990 to 1998, when the first company was privatized., p. 77 According to SISS, since 1998 the annual investment ranges between US$ 151m (1999) and US$ 443m (2002). Total investment in 2006 was US$ 325m.
