user: Question: What was the amount of deaths that had a natural growth smaller than 3.4, and a total fertility rate of 1.63?
Columns: ['Year', 'Births (000s)', 'Deaths', 'Natural Growth', 'Total Fertility Rate']
Types: ['text', 'real', 'real', 'real', 'text']
Sample row: ['1990', 0.7, 0.4, 0.3, '1.58']
SQL:

assistant: SELECT "Deaths" FROM "Table" WHERE "Natural Growth" < 3.4 AND "Total Fertility Rate" = '1.63';