Table:
| Years | 30/9/2018 | 30/9/2019 |
| --- | --- | --- |
| Germany | 16 | 16 |
| Netherlands | 22 | 24 |
| United Kingdom | 18 | 18 |
| Belgium | 4 | 6 |
| Other countries | 11 | 11 |
Paragraphs:
Changes in parameters on the basis of actuarial calculations led to a total increase in the present value of defined benefit obligations by €247 million (2017/18: €−24 million). Most of the effects result from the reduction of the applied invoice rates.
The weighted average term of defined benefit commitments for the countries with material pension obligations amounts to:
Question:
What are the changes in parameter based on?
Answer: on the basis of actuarial calculations