2023

6.4

2019

6.7

2016

6.1

1980

6.3

1997

6.5

2024

5.9

1975

6.8

1994

6.2

2013

6.1

2005

4.6

2007

5.8

2014

5.8

1975

8.0

1985

6.6

2008

8.9

2013

7.7

1990

6.6

1987

5.2

1939

7.1

2025

7.3