In addition, there are areas of tropical rainforest, waterfalls, petroglyphs and lakes. The Biji Yokot’an Route centers on the municipality of Nacajuca. It features the crafts of the area such as decorated containers made from gourds, its cuisine, especially river fish, the Chontal people of the area and the river boardwalk. Tabasco's population has been growing rapidly: between 1990 and 2005 the population grew from 1,501,744 to 1,989,969. Tabasco's population is mostly young, with an average age of 19 years and over 38% of the population is under 15 years of age. The state's population is more rural than the national average: 57% lives in urban areas, in contrast to 78% of Mexico's population in general. Those who leave the state mostly go to Quintana Roo, Campeche and Veracruz. Those that migrate to the state mostly come from Chiapas, Veracruz and Campeche. As of the 2000s, only about 2% of the population has left to live abroad, mostly to the United States. The national average is 16%. 3% of the population speaks an indigenous language, which is lower than the national average of 6%. Most speak the Tabascan dialect of the Chontal language. This is followed by Ch’ol, Tzeltal, Maya, Zapoteco, Nahuatl and Tzotzil. Traditional masculine dress consists of a white shirt and pants, with black boots or shoes, black belt, a hat in a style called "chontal" and a red handkerchief around the neck. This dress is based on an older style of dress called "traje choco" which was made of cotton cloth called manta used to work in the fields. Traditional feminine dress consists of a wide skirt trimmed with a ruffle. Under the skirt is a slip designed to fluff the skirt and make the waist look smaller. The blouse is white with an embroidered band in bright colors, often with flower and/or animal designs. It has short sleeves ending in a square form in the lower part. The woman often carried a small handkerchief and a shawl called a rebozo in bright colors, often complementing the skirt. The shoes are black. The state has a number of unique traditional dances due to its relative isolation from the rest of the country. These include "El Gigante" of Nacajuca performed on 14 August.