2002

7.7

1985

8.3

1990

7.4

1997

7.9

1994

8.7

2023

8.4

2015

7.9

1989

7.9

2009

7.6

2018

7.4

1979

8.2

1995

8.0

2007

7.1

2010

8.4

2013

6.5

2017

6.1

2011

7.3

1972

8.7

2006

6.7

1987

7.3