2020

6.5

2006

6.7

1978

5.9

1999

5.9

2001

6.8

2007

5.4

2019

7.0

2012

9.7

1979

7.6

2019

6.5

2006

6.8

1993

6.2

2002

6.5

2004

6.4

1976

6.2

1966

6.3

2013

8.4

2019

6.5

2014

6.3

1966

6.2