Use of emergency contraception among American women spiked between 2006 and 2010, more than doubling in that time span, according to a new Centers for Disease Control report.

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The report, which was published by the CDC's National Center for Health Statistics, says that 11 percent of women aged 15-44 used emergency contraception - commonly known as the morning-after pill - during that four year time span. That's up 175 percent from a similar study done in 2002, which showed that 4 percent had used the pill.

Of that 11 percent, the CDC says that 17 percent of those emergency contraception users had done so three or more times. More than half - 59 percent, to be exact - only used it once.

Among 20 to 24-year-old women, the CDC report says that about one in four had ever used emergency contraception.

Read the entire report below: