1998

7.2

1993

8.1

2024

6.1

2004

8.3

2022

6.0

1973

7.5

2017

7.6

2004

8.6

1993

7.1

2016

7.9

2014

8.3

1981

7.9

2013

8.1

1990

7.9

1993

6.8

2008

6.8

1993

7.7

1985

9.0

2007

7.8

2023

6.6