Numbers: Jun. 14, 2004

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171 Number of positions in the Department of Homeland Security that are unfilled out of 500 career jobs there

90% Portion of port-security positions at the department that are vacant

51 Number of confirmed cases last year of illicit trafficking in the radiological materials usable in dirty bombs, according to the U.N.

8 Number of cases in 1996

92% Portion of parents polled who said their children always wore a seat belt when riding in a car

70% Portion of fourth-and fifth-graders who said they always wore a seat belt

2% Decrease in cases of lung cancer in women each year from 1998 to 2001, after years of steady increases

10 million Number of cancer survivors in the U.S.

3 million Number of cancer survivors in 1971

Sources: Congressional Quarterly (2); New Scientist (2); Injury Control and Safety Promotion (2); AP; USA Today (2)