Last week was a dramatic one for Thailand's economy. Monday, Thai bank regulators put new rules into effect requiring banks to keep 30% of new foreign currency deposits for at least a year in order to slow the trading on their baht currency. Tuesday, the Bangkok stock market took a 15% dive, their biggest one-day drop ever, as investors dumped their Thai investments in other Pacific Rim markets. The government responded by lifting the new controls from stock investments, while leaving them in place for foreign investments in bonds and commercial paper. Wednesday, the Bangkok market rose 11.2%, bringing up some of the other Asian markets that it had dragged down on Tuesday. According to Thai central bank governor Tarisa Watanagase, the United States trade imbalance led to this problem and will lead to more problems with smaller Asian economies.