2011

6.4

1975

7.0

6.6

1999

5.1

1968

6.9

2002

7.1

2022

6.1

2004

8.4

2010

7.9

1992

6.4

1998

6.4

2009

6.2

2003

6.3

2011

7.0

1994

6.5

1990

7.0

1966

6.1

2014

6.6

2020

6.4

1999

6.9