Maths : Data Interpretation

With reference to the above graph, consider the following statements considering 1970 as base year:

1. Population has stabilized after 35 years.
2. Population growth rate has stabilized after 35 years.
3. Death rate has fallen by 10% in the first 10 years.
4. Birth rate has stabilized after 35 years.

Which of the above are the most logical and rational statements that can be made from the above graph?