2010

6.3

2006

6.1

2011

6.4

2025

6.9

2015

6.4

1994

7.4

1994

6.7

2020

6.4

2006

5.4

1975

6.9

1998

6.0

2024

7.0

2017

5.9

2001

6.8

1993

7.6

1989

5.5

2006

5.8

1972

4.0

2023

6.8

1975

6.6