1997

7.1

1959

7.6

1992

6.8

2005

5.9

1988

7.5

2015

8.3

2006

9.3

2004

7.1

1985

4.8

2010

7.0

2007

7.9

1983

6.9

1958

7.5

2012

8.2

2011

7.0

2024

8.0

2006

7.4

2023

7.6

1998

6.8

2002

7.9