The first year Reagan was President, 1981, the United States was a net creditor to the rest of the world in the amount of $140,900,000,000 ($140.9 billion).  In 1984 we were still a net creditor, but the amount had been reduced to $3,300,000,000 ($3.3 billion).  In 1987, we owed other nations a net amount of $378,300,000,000 ($378.3 billion).  By the end of 1988, Reagan’s last year in office, the net amount we owed other nations had grown to $532,500,000,000 ($532.5 billion).

When Reagan started we were over $140 billion ahead and when Reagan left office we were over $532 billion in the red!

http://www.commondreams.org/view/2011/07/10-6

http://www.nytimes.com/1989/07/04/business/us-is-bigger-debtor-nation.html

Ronald Reagan took us from being a creditor nation to being the largest debtor nation