Merge contents of several cells in one cell

Hi people! 

I've got a question I wasn't able to find an answer to using the search function...

I want to merge the content of several cells (A2, A3, A4 etc. all the way down to A99)  into one (B2), separated with a semicolon and a space  - without doing all this manually. Any suggestions?

I know this formula =A2&"; "&A3 - but how do I do this all the way down to A99?

Thanks in advance!