1999

7.5

1983

6.8

2019

8.4

2005

7.7

1960

7.4

2008

6.7

1989

8.0

2011

8.1

2001

7.2

2016

7.8

1993

6.8

2007

7.5

2007

8.2

2007

7.9

2010

6.7

2015

7.4

2007

8.2

2011

7.6

2000

6.2

1997

8.0