Banknotes of the Japanese yen
The banknotes of the Japanese yen are part of the physical form of Japan's currency. The issuance of the yen banknotes began in 1872, two years after the currency was introduced. Throughout its history, the denominations have ranged from 0.05 yen to 10,000 yen.
Carry (investment)
By early year 2007, it was estimated that some US$1 trillion may have been staked on the yen carry trade. Since the mid-90's, the Bank of Japan has set Japanese interest rates at very low levels making it profitable to borrow Japanese yen to fund activities in other currencies. These activities include subprime lending in the USA, and funding of emerging markets, especially BRIC countries and resource rich countries. The trade largely collapsed in 2008 particularly in regard to the yen.