2019

6.7

1997

7.7

1996

6.5

2014

6.6

2016

6.4

1991

7.1

1992

6.5

2006

6.8

1998

7.0

1975

7.3

2011

6.2

2002

8.2

2014

7.0

2012

7.3

2013

5.0

2019

8.2

1997

8.1

2023

6.6

2020

4.4

1993

8.8