Consider again South Africa where the GDP in 1950 was 77,836.88 million dollars and in 2019 748,861 million dollars. The population in 1950 was 13.2 million and in 2019 it was 58.5 million. What has been the average annual growth rate of per-capita GDP for South Africa during the period 1950 to 2019? Use growth compounding to calculate the number and give your answer as a decimal with 4 decimal places.