Table schema:
CREATE TABLE table_name_75 (over_total_tax_revenue__in__percentage_ VARCHAR, stamp_duty_reserve_tax VARCHAR, year VARCHAR)

Question: What is the Total Tax Revenue that has an n.a. Stamp Duty Reserve Tax in the years 1995-96?
SQL: SELECT over_total_tax_revenue__in__percentage_ FROM table_name_75 WHERE stamp_duty_reserve_tax = "n.a." AND year = "1995-96"