10
1,707,1970,10345678,17500
2,707,1975,8888888,1500
3,727,1980,7333333,15555,
4,727,1985,5888888,9000
5,737,1990,4444444,25000
6,737,1995,3000000,4000
7,747,2000,1500000,80000
8,747,2005,333333,40000
9,MD80,1990,5000000,5000
10,MD80,1985,6666666,12000