year,cashflow_man_yen,cumulative_man_yen,pv_at_2pct_man_yen
0,-30,-30,-30.0
1,3,-27,2.941176470588235
2,3,-24,2.883506343713956
3,3,-21,2.826967003641133
4,3,-18,2.7715362780795427
5,3,-15,2.7171924294897476
6,3,-12,2.663914146558576
7,3,-9,2.6116805358417414
8,3,-6,2.560471113570334
9,3,-3,2.5102657976179747
10,3,0,2.4610448996254655
11,3,3,2.412789117279868
12,3,6,2.3654795267449686
13,3,9,2.319097575240165
14,3,12,2.273625073764868
15,3,15,2.2290441899655566