1992

6.9

2002

7.5

1997

7.5

2012

7.6

1984

7.0

2001

8.0

2014

7.4

2013

8.0

2014

6.8

2017

5.7

1979

7.3

1987

5.5

2017

7.4

2023

7.6

2001

7.6

1992

6.7

1969

7.3

2011

6.0

2009

6.8

1997

7.4