1997

6.1

1985

2.0

1969

3.0

1989

4.5

2019

6.5

2009

6.6

2019

0.0

2013

6.7

2017

7.2

2022

5.5

2007

5.6

1983

5.4

1980

7.5

1991

0.0

2002

6.8

1980

5.1

2005

6.3

1992

6.0

1980

4.5

1990

6.8