Rising at an average of 6 percent each year since academic year 1987-1988, compared with overall average price increases of 3 percent per year, college textbook and supply prices trailed tuition and fee increases, which averaged 7 percent per year. Since December 1986, textbook and supply prices have nearly tripled, increasing by 186 percent, while tuition and fees increased by 240 percent and overall prices grew by 72 percent. While increases in textbook and supply prices have followed increases in tuition and fees, the cost of textbooks and supplies for degree-seeking students as a percentage of tuition and fees varies by the type of institution attended. For example, the average estimated cost of books and supplies per first-time, full-time student for academic year 2003-2004 was $898 at 4-year public institutions, or about 26 percent of the cost of tuition and fees. At 2-year public institutions, where low-income students are more likely to pursue a degree program and tuition and fees are lower, the average estimated cost of books and supplies per first-time, full-time student was $886 in academic year 2003-2004, representing almost three-quarters of the cost of tuition and fees.