1965

7.8

1996

7.8

2005

5.2

2006

8.1

1985

7.5

2012

5.5

1999

6.7

2011

8.0

2023

6.7

2001

5.6

1994

8.4

2015

8.3

2021

7.0

1982

8.1

2016

7.6

2020

7.6

2009

7.2

2007

8.5

1964

7.9

1995

6.0