1984

6.8

1990

7.0

1996

7.5

1985

7.2

1986

8.0

1965

5.0

2001

7.9

1989

6.9

2023

6.8

2016

2.6

2018

0.0

1994

0.0

2006

7.1

1988

5.6

2023

0.0

1997

5.0

2013

5.7

2020

0.0

2023

10.0

1991

7.4