user: Question: What year had an issue price of $94.95 and theme of Amethyst Crystal?
Columns: ['Year', 'Theme', 'Artist', 'Composition', 'Mintage', 'Issue Price']
Types: ['real', 'text', 'text', 'text', 'real', 'text']
Sample row: [2007.0, 'Blue Crystal - Piedfort', 'Konrad Wachelko', '92.5% silver, 7.5% copper', 5000.0, '$94.95']
SQL:

assistant: SELECT "Year" FROM "Table" WHERE "Issue Price" = '$94.95' AND "Theme" = 'Amethyst Crystal';