Passage: In the United States vitamin E supplement use by female health professionals was 16.1% in 1986, 46.2% in 1998, 44.3% in 2002, but decreased to 19.8% in 2006. Similarly, for male health professionals, rates for same years were 18.9%, 52.0%, 49.4% and 24.5%. The authors theorized that declining use in these populations may have due to publications of studies that showed either no benefits or negative consequences from vitamin E supplements. Within the US military services, vitamin prescriptions written for active, reserve and retired military, and their dependents, were tracked over years 2007-2011. Vitamin E prescriptions decreased by 53% while vitamin C remained constant and vitamin D increased by 454%. A report on vitamin E sales volume in the US documented a 50% decrease between 2000 and 2006, with a cause attributed to a  meta-analysis that had concluded that high-dosage vitamin E increased all-cause mortality.
By how many percentage points did the female and male professional usage of Vitamin E differ in 1986? From 2007-2001, which two vitamin use changed by more than 50%? How many percent did Vitamin E use increase from 1986 to 1998? How many percent did usage of Vitamin E decrease in the four years after 2002? How many percent higher was Vitamin E supplement use by female health professionals in 2006 over 1986? How many percent higher was the male professional recommendation than the female's in 2006? How many percent more was the increase from 1986 to 1998 than the decrease from 2002 to 2006? How many percent was the decrease in 2006 from 2002 of the female health professionals using a vitamin E supplement? How many total percent more did male health professionals use vitamin E supplements? How many years did a 50% decrease of vitamin E sales volume happen? How many years saw over 44% of female health professionals using a vitamin E supplement? What gender of health professionals used vitamin E supplements the least each year? What was the highest percentage of Vitamin E use by either male or female health professionals? What year was vitamin E supplement use the highest by female health professionals? What year was vitamin E supplements used more for both male and female health professionals? Which group saw year periods where vitamin E supplement use was 49% or above, male health professionals or female health professionals? Which vitamin supplement was the most used by those in the military during 2007-2011, vitamin E, vitamin C, or vitamin D? Which year had the highest difference between male and female doctor recommendation of Vitamin E?