Mexican President Enrique Pena Nieto has acknowledged that Mexico's crime, corruption and economic troubles have caused distrust and anger among Mexicans.

While Pena Nieto stressed his administration's achievements in structural reforms and government programs, his state-of-the-nation address Wednesday contained a dose of realism.

Pena Nieto began the speech by talking about the disappearance of 43 students in 2014, and the escape of drug lord Joaquin "El Chapo" Guzman.

He said those events "bother and disturb us as a society."

Pena Nieto pledged that in the last half of his six-year term the government would combat corruption and crime.

Mexico has been hit by rising violence, a falling currency and a slowing economy, and the president's decline in the polls.