 The concessionaire did invest much more than its public predecessor and achieved substantial increases in access to water and sewerage.According to the Argentinean economist Sebastian Galiani, the public company OSN had invested only US$25m per year between 1983 and 1993, while the private concessionaire Aguas Argentinas increased investments to around US$200 m per year between 1993 and 2000.According to Suez, during the 13 year-duration of its concession it extended access to water to 2 million people and access to sanitation to 1 million people, despite the economic crisis.