During the 20th century, the Lacandon has had a dramatic increase in population and along with it, severe deforestation. The population of municipalities in this area, Altamirano, Las Margaritas, Ocosingo and Palenque have risen from 11,000 in 1920 to over 376,000 in 2000. Migrants include Ch'ol, Tzeltal, Tzotzil, Tojolabal indigenous peoples along with mestizos, Guatemalan refugees and others. Most of these migrants are peasant farmers, who cut forest to plant crops. However, the soil of this area cannot support annual crop farming for more than three or four harvests. The increase in population and the need to move on to new lands has pitted migrants against each other, the native Lacandon people, and the various ecological reserves for land. It is estimated that only ten percent of the original Lacandon rainforest in Mexico remains, with the rest strip-mined, logged and farmed. It once stretched over a large part of eastern Chiapas but all that remains is along the northern edge of the Guatemalan border. Of this remaining portion, Mexico is losing over five percent each year.