Multi line graph with unequal data set

[SyedIsmailAhamed]

Hi,
Am trying to draw a multi-line graph, what i have noticed is, if the data set have same number if values then only line will be drawn complete, i have attached a sample project, tap on, line graph and see the blue line , if the data is this ,line is perfect
self.data = @[
@[@10, @4, @8, @2, @9, @3, @6],
@[@1, @2, @3, @4, @5, @6, @10]
];

if the data has been changed to this
self.data = @[
@[@10, @4, @8, @2, @9, @3, @6],
@[@1, @2, @3]
];
line doesn't reach till the end, lets assume i have number 3 which is for year 2007 and number 2 is for 2003 but i dont have any data for between 2003 and 2007 but i want by line to reach 2007 to reach till the end. i have attached a sample project, please check line graph.
GraphKit-master 4.zip