1984

6.3

2007

7.7

2002

7.7

1966

6.1

1968

6.6

2014

5.6

2016

6.5

2007

6.3

2004

8.0

1998

6.7

2023

6.6

2024

7.3

1990

6.1

2007

7.4

2016

6.8

2011

6.3

2006

5.1

1979

6.1

1981

6.2

2005

7.8