1983

7.3

2013

7.5

2014

8.2

1993

7.6

1986

7.7

2024

7.6

1988

7.2

1997

7.1

2008

7.5

1997

7.3

2019

7.7

2024

8.3

1985

7.5

2009

8.0

2003

7.1

1976

7.0

2012

8.6

2013

7.4

2022

7.9

2004

7.7