Throughout the 19th century, the population of Mexico had barely doubled. This trend continued during the first two decades of the 20th century, and even in the 1921 census there was a loss of about 1 million inhabitants. The phenomenon can be explained because during the decade from 1910 to 1921 the Mexican Revolution took place. The growth rate increased dramatically between the 1930s and the 1980s, when the country registered growth rates of over 3% (1950–1980). The Mexican population doubled in twenty years, and at that rate it was expected that by the year 2000 there would be 120 million Mexicans. Life expectancy went from 36 years (in 1895) to 72 years (in the year 2000). According to estimations made by Mexico's National Geography and Statistics Institute, as of 2017 Mexico has 123.5 million inhabitants making it the most populous Spanish-speaking country in the world. Between 2005 and 2010, the Mexican population grew at an average of 1.70% per year, up from 1.16% per year between 2000 and 2005.