1995

5.9

2020

5.8

2006

6.7

2003

6.3

1964

6.6

2012

6.0

2023

5.7

2002

6.1

2012

9.3

1998

6.1

2008

5.6

2000

6.3

2017

6.5

2007

7.2

1990

5.7

2015

6.9

2001

6.8

1958

5.5

2017

7.3

1970

4.6