user: Question: Name the average popular votes in years after 1990 with percentage of 4.94%
Columns: ['Year', 'Office', 'Candidate', 'Popular Votes', 'Percentage']
Types: ['real', 'text', 'text', 'real', 'text']
Sample row: [1986.0, 'MN Attorney General', 'Derrick Grimmer', 16394.0, '1.17%']
SQL:

assistant: SELECT AVG("Popular Votes") FROM "Table" WHERE "Percentage" = '4.94%' AND "Year" > 1990.0;