can someone hep me please

Population of Europe by Age Groups
Population (in thousands)
1----------1950 --1970 --1995
Age 0-14--------143,175 166,367 139,464
Age15-64------- 359,162 421,432 487,110
Age 65+ 44,981- 68,642- 101,338
Age 75+ 14,553- 22,762- 38,139
Total--547,318 656,441 -727,912
Source: European Rural Development (ERD) Project.
What was the percentage increase in the age 75+ population of Europe from 1970 to 1995?
A) 67.6%
B) 63.4%
C) 68.9%
D) 65.1%

What years? What age groups? Which countries?