Argentina's debt grew continuously during the 1990s, increasing to above US$120 billion. As a structural budget deficit continued, the government kept borrowing more, creditors continued to lend money, while the IMF suggested less state spending to stop the government's ongoing need to keep borrowing more and more. As the debt pile grew, it became increasingly clear the government's structural budget deficit was not compatible with a low inflation fixed exchange rate – either the government had to start earning as much as it spent, or it had to start (inflationary) printing of money (and thus abandoning the fixed exchange rate as it would not be able to borrow the needed amounts of US dollars to keep the exchange rate stable). Investors started to speculate that the government would never stop spending more than it earned, and so there was only one option for the government – inflation and the abandonment of the fixed exchange rate. In a similar fashion to Black Wednesday, investors began to sell the Argentine currency, betting it would become worthless against the US dollar when the inevitable inflation started. This became a self-fulfilling prophecy, quickly leading to the government's US dollar reserves being exhausted. The crisis led to riots in December 2001. In 2002, a default on about $93 billion of the debt was declared. Investment fled the country, and capital flow towards Argentina ceased almost completely.