1977

4.9

2025

7.5

2024

6.0

2023

9.0

2018

6.0

2005

8.4

1964

7.4

2021

9.2

1982

5.0

1968

5.7

1997

7.3

2016

6.0

2012

6.5

2013

8.1

2003

6.0

1962

5.8

1995

5.6

1998

3.8