日期匯率（人民幣:美元）
2010-12-31 100: 662.2700
2009-12-31 100:682.8200
2008-12-31 100:683.4600
2007-12-28 100:730.4600
2006-12-29 100:780.8700
2005-12-30 100: 807.0900