What is the average value of Adolescent fertility rate in the country whose Alpha2Code is 1A?
average value = AVG(Value) where IndicatorName = 'Adolescent fertility rate (births per 1,000 women ages 15-19)'
SELECT CAST(SUM(T2.Value) AS REAL) * 100 / COUNT(T2.Year) FROM Country AS T1 INNER JOIN Indicators AS T2 ON T1.CountryCode = T2.CountryCode WHERE T1.Alpha2Code = '1A' AND T2.IndicatorName = 'Adolescent fertility rate (births per 1,000 women ages 15-19)'