var saleprice =[
[1276786223000,3200,14823],
[1307825961000,2817.67,14823],
[1323734630000,2299.99,24307],
[1354080850000,3901.8,21909],
[1411050043000,4263.68,34912],
[1508677642000,4330.13,27232],
[1520432397000,2478.94,50289],
[1595876825000,3740,62677],
]