For the first time in 20 years, the number of violent crimes increased, up 18 percent from last year, a new report reveals.

It was the first year-to-year increase for violent crime since 1993, marking the end of a long string of declines. Violent crime fell by 65 percent since 1993, from 16.8 million to 5.8 million last year.

In addition, household burglaries rose 14 percent, from 3.2million to 3.6million. Similarly, the number of thefts jumped by 10 percent, from 11.6 million to 12.8 million.

The increase in violent crime was the result of an upward swing in assaults, which rose 22 percent, from 4million in 2010 to 5million last year.

In the latest survey, property crime was up for the first time in a decade, from 15.4million in 2010 to 17million last year.

But the incidence of rape, sexual assault and robbery remained largely unchanged, as did serious violent crime involving weapons or injury.