 Between 1982 and 1986, the U.S. Congress awarded $825 million annually in block grants for NAP program, and since then the appropriations have steadily increased by an estimated 3% to 4% to compensate for inflation.It has surpassed $1 billion annually since the early 1990s, and increased 30% from 1993 to 2002.Since fiscal year 2006, the appropriation has reached over $1.5 billion annually.