1984

5.7

1991

7.0

2012

7.3

2014

7.7

2008

8.5

2016

6.0

2004

6.1

2001

7.2

2010

7.3

1995

6.8

7.8

2023

7.7

2012

7.1

1999

8.4

2009

7.1

1994

8.5

1960

8.4

1996

5.2

1998

8.1

1986

7.0