1981

7.1

2003

5.8

1995

8.0

1987

6.5

1991

7.3

0.0

2021

5.7

1999

5.2

2020

7.3

1976

6.6

2009

6.9

1984

6.5

2005

6.2

2019

5.7

1994

4.4

1998

6.2

2016

7.7

2017

7.5

2006

4.1

1993

4.3