Logging has occurred since the end of the 1800s when the first loggers arrived. Later, liberalization of laws in the 1990s resulted in the exhaustion of resources. In 1995, it was declared that "after hundred years of logging, only two percent (300,000 acres) of these unique forests remains", leaving one of the most biologically diverse ecosystem in North America, containing hundreds of medicinal plant, oak and pine species in danger of extinction. The Mexican Commission of Solidarity and Defense of Human Rights produced a report in 2000 noting the lack of studies by the government on how lumber production affected the ecosystem. Similarly, the North American Free Trade Agreement (NAFTA) boosted foreign investment which resulted in the privatization of communal land, and market-based mechanisms of environmental regulation.