SUMIF with multiple column and row criteria

Hi All,

I am looking for some help with a formula for the attached spreadsheet's summary Tab (G5:K6).

Demo1.xlsx

The formula needs to be able to read from the Data Tab and:

1. Total the values in a column based on the country being selected and then multiple expense types being selected by dropdown (up to 3). Formula in G9 does part of this (via help on the forum yesterday).
2. By changing the year and Month in rows 2 and 3 the summary table should update accordingly.

I am trying not to use named ranges for the columns and think a sumif/index/match formula may be the way to go but I have tried so many different things that are not working I think my head is about to pop.

Any help is greatly appreciated.

Thanks,

Adam