var saleprice =[
[1318811981000,388.88,20174],
[1335580630000,521.11,26400],
[1340220592000,595,27327],
[1386217846000,432,34103],
[1425179511000,500,41357],
[1495310013000,649.31,50263],
[1581194634000,561,61395],
[1602727250000,405,63788],
]