1997

7.1

2024

6.1

1962

7.2

1995

7.7

1998

6.8

2007

7.4

2004

7.8

1991

8.1

1988

7.5

1998

7.5

2016

7.1

2003

5.2

2018

7.6

2005

6.2

2021

7.3

1976

7.9

1985

8.5

2002

8.2

1999

8.4

2024

7.5