2019

7.5

1989

7.0

2013

6.7

2020

6.7

1987

6.5

2014

6.0

1987

6.8

2012

6.2

1988

6.4

2001

6.1

2003

5.6

2009

6.3

2015

5.3

2017

5.8

1998

5.7

1967

6.5

1996

5.8

2011

7.3

1992

6.7

2004

6.6