var saleprice =[
[1278291882000,4254.44,15041],
[1296461395000,3988,405],
[1307021035000,3848.09,20502],
[1390673332000,2888.03,34685],
[1427607120000,8995,26287],
[1477619950000,3039.7,11187],
[1509820705000,4110,52196],
[1579182891000,1628.88,20502],
]