user: Question: What is the Total Tax Revenue that has an n.a. Stamp Duty Reserve Tax in the years 1995-96?
Columns: ['Year', 'Stamp duty reserve tax', 'Standard Stamp Duty', 'Standard Duties Total Revenue (in €million)', 'over Total Tax Revenue (in %)', 'over GDP (in %)']
Types: ['text', 'text', 'text', 'real', 'text', 'real']
Sample row: ['1995-96', 'n.a.', 'n/a', 1810.0, '0.59', 0.2]
SQL:

assistant: SELECT "over Total Tax Revenue (in %)" FROM "Table" WHERE "Stamp duty reserve tax" = 'n.a.' AND "Year" = '1995-96';