yyyy/mm/dd,200502,200503,200504,200505,200506
2004/12/20,165,163.7,148.1,140.1,
2004/12/21,168.4,167.3,150.6,150,
2004/12/22,168.9,170,148.4,149.5,
2004/12/24,169,176.5,151.9,153,
2004/12/27,169.2,170.5,146.8,146.7,145
2004/12/28,163.3,170.4,146.6,148.4,145.9