Why did you change my formula? By putting something in between the parentheses, you remove the dynamic nature of it.
Note that when you use:
you return the sheet number of the current sheet (that the formula is found on).
So, if you were on your first sheet, that formula would return 1.
On the second sheet, that formula returns 2.
So, then if you use the formula I gave you and put it in cell M1:
it will return 2011 on the first sheet (2010 + 1),
and then 2012 on the second sheet (2010 +2),
and then 2013 on the third sheet (2010 + 3).
So once you set up the formula in this manner to return the correct value on the original sheet, it will automatically return what you need on any new sheets you add and copy over.
The only thing you should ever need to change is the starting value on the original sheet (2010), and nowhere else.
The number in the original formula should be one less than the first year you want (so that when you add one to it, it returns the proper value).
In the example you shown above, your formula in M1 should just be: