What is the average birth rate that has a total fertility rate of na, and a natural growth smaller than 2.5?
CREATE TABLE table_name_14 (births__000s_ INTEGER, total_fertility_rate VARCHAR, natural_growth VARCHAR)
SELECT AVG(births__000s_) FROM table_name_14 WHERE total_fertility_rate = "na" AND natural_growth < 2.5
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_14 (births__000s_ INTEGER, total_fertility_rate VARCHAR, natural_growth VARCHAR) Question: What is the average birth rate that has a total fertility rate of na, and a natural growth smaller than 2.5? [/INST] SELECT AVG(births__000s_) FROM table_name_14 WHERE total_fertility_rate = "na" AND natural_growth < 2.5 </s>