Linking multiple sheets

I have a workbook that contains more than 67 sheets of same formats and columns. Now, in a new sheet in the same workbook, I want to count the cells of Column B of all sheets separately, for example:
Column B of Nepal - 456 Cells
Column B of Pak - 1245 Cells
Column B of CHN - 981 Cells
Column B of UK - 1027 Cells
Column B of USA - 789 Cells
& so on

I would like to have a common formula to link the all sheets instead of clicking each sheet one by one using =CountA(Nepal!B:B) and so on. I tried it listing all sheet names in a new sheet and applying formula to its corresponding cell. It took long time and tedious job to click again and again. So please suggest me a formula so that I can do it in easy way.

Why not all date in the same worksheet / in 1 worksheet?

That will make it a lot easier to analyse the data.

How about doing a sumproduct indirect with named ranges?

Please paste the following into cell C5 and then drag the fill handle down: =COUNTA(INDIRECT(B5&"!$B$5:$B$500"))
Let us know if you have any questions.