Guatemala's main languages are Spanish and various Mayan languages. A common saying in Guatemala is "If the river makes noise it's because it's carrying rocks", meaning rumors often hold truth. Corn, rice and beans are staples in Guatemalan cuisine. Guatemalan music is diverse and includes genres like marimba as well as influences from other countries. Tourism is important to Guatemala's economy, with over 1.5 million visitors annually attracted to sites like lakes and volcanoes. Literacy rates are around 75% and life expectancy is approximately 71 years.