1996

6.8

2023

7.8

2013

7.5

2004

5.8

1993

7.9

1977

7.2

2012

7.2

2024

7.8

2024

8.1

2008

7.7

1965

7.9

2011

8.3

2000

7.6

2004

7.5

2016

8.6

2001

7.6

2024

7.5

2022

7.9

1978

7.1

2015

8.1