Fifty-nine percent and counting. The current ratio of U.S. public debt to gross domestic product (GDP) is close to 60%, according to USDebtClock.org, but at current rates of growth, debt will actually be larger than GDP by 2012. Right now, the total national public debt outstanding is $13.057 trillion, or $42,195 per citizen. Those numbers grow rapidly, so each citizen s share will be larger by the end of the day.

Maybe the nation can tackle this problem. After all, Americans have gotten more frugal since the recession. As of April, the national savings rate was 3.6%. With a median personal income of $41,056 (based on an average of the median incomes for men and women working full time), it would take the country s 139 million workers 76 years to pay off $13 trillion, if everyone put aside 3% of their income a year.

U.S. debt will soon outstrip GDP. See some other ways we could spend that money.

Unfortunately for deficit hawks, Americans don t seem to be willing to devote that much money to the cause of debt reduction. Individuals can make direct contributions to pay down the debt. In fiscal year 2009, the Treasury received $3.063 million in direct debt-reduction contributions. That s not bad, but it s not nearly enough. Based on the rate of voluntary contributions over the past five years, it would take Americans nearly five million years to pay off $13 trillion.

It s impossible to say what a dollar would be worth five million years from now, but here are some things $13 trillion could buy today:

With $13 trillion, Americans could buy nine 32-gigabyte iPhones (the 3GS model) for every human being on the planet, with a little money left over to spend on figuring out what to do with nine phones. Alternatively, the country could buy

(

) itself, which recently surpassed

to become the largest U.S. tech company in terms of market capitalization, 57 times over.

Apple Microsoft

At $101,500 apiece, $13 trillion could buy Tesla Roadsters for 128 million lucky people. That s roughly the population of Japan.

Four years at Yale, including room and board, costs about $190,000 at today s prices. For $13 trillion, 68 million students could be sent to New Haven.

$13 trillion could buy every person in the U.S. one item off of McDonald s dollar menu every day for the next 115 years. Doing the same for every person in the world, the money would last a little over five years.

As of April, the median home price in the U.S. was $198,400. With $13 trillion, 65 million families could get a new home.

Why not fly south this winter? And next winter, too? With $13 trillion, the entire population of the country could fly first class from Washington, D.C. to Rio de Janeiro 11 times.

The price of a movie ticket may be rising, but with $13 trillion, every person in the U.S. could see a movie every day for the next 14 years.

According to data from the Concierge Medicine Research Collective, $13 trillion could buy 10 years of round-the-clock on-call medical care for more than 928 million people or for the entire population of the U.S. for 30 years.

BP said Monday that the cost of the oil spill in the Gulf of Mexico has already reached

, and it s likely the cost will keep rising. Even if the cost of cleanup, plus claims for damages from local residents, ultimately reaches $40 billion, $13 trillion could pay the whole tab 326 times over.

$1.25 billion

For the rest of our lives. Based on the cost of a Disney Premiere Passport that gives the bearer unlimited admission to Disneyland and Disney World for one year, with $13 trillion the entire population of the U.S. could spend the next 60 years hanging out with Mickey, although the lines at Space Mountain might get a little long.