1987

7.8

1979

6.8

1973

8.1

1991

7.7

2004

5.8

2015

7.3

1985

7.7

1966

8.0

2011

7.0

2002

7.5

2009

7.7

2005

8.3

2004

7.3

2007

7.0

1987

7.3

1989

7.7

2024

7.6

2021

5.9

2014

7.6

2012

7.3