From National Statistics Office, download excel format data, and manipulate it for a long time. 5 year interval, but enough to check the changes
| First 10 | Last 10 |
|---|---|
| A1970 | F2010 |
| M1970 | A2011 |
| F1970 | M2011 |
| A1971 | F2011 |
| M1971 | A2012 |
| F1971 | M2012 |
| A1972 | F2012 |
| M1972 | A2013 |
| F1972 | M2013 |
| A1973 | F2013 |
Compare the survival function plots of 1970 and 2013
Use shading to specify the difference
The area of the shaded region is 20.4 (years).