The average monthly price of regular gasoline in the United States was recorded for the years 1998-2005. Each year's distribution of average monthly regular gasoline prices is shown in the following box plots. The chart shown has box plots indicating the distribution in gas prices for the years 1998 to 2005. The 2nd, 3rd, and 4th quartiles of the boxplot for 2005 are above all the other box plots. About what percentage of monthly gasoline prices in 2005 exceed all the other years' monthly gasoline prices