2007

8.5

2012

6.8

2002

8.4

2019

7.8

1999

7.4

1974

8.0

1992

7.2

2010

7.7

1990

7.8

1999

8.7

2002

7.1

2004

8.2

2011

7.9

2017

8.0

2019

7.7

1966

7.6

2023

6.9

2016

7.5

2010

7.5

1997

8.4