Excise duty in 2017, VAT 1 January 2018, inflation for the last year.........I think we are lucky if we get change out of a 15% increase in the last year. That doesn't mention the previous years worth of inflation, where we didn't even get the 3% to help cover it.
By rough estimates, we are down by at least 20% plus since the last step in 2016.
10% wouldn't even keep us level to 2 years ago.