2019

8.7

1993

5.8

2011

7.1

2020

5.8

2012

8.0

1980

8.3

1964

7.0

1975

7.9

1998

6.2

2017

5.9

2013

7.1

1995

5.7

2014

6.8

1992

8.2

2001

7.0

1989

5.5

1986

6.4

2016

6.1

2014

7.7

1985

6.2