1997

7.5

2004

7.8

2006

7.9

1975

7.0

2004

7.0

2001

7.8

1989

7.3

1994

6.3

2019

5.2

2003

6.6

1985

7.5

2024

6.1

2018

0.0

1995

7.1

2024

7.4

2014

7.2

2021

0.0

2008

5.3

2015

7.9

1984

8.5