1983

7.2

1990

7.4

1985

6.5

2004

6.4

2003

6.7

1988

6.9

2018

5.3

1968

7.5

2024

5.9

1992

5.7

2024

8.8

1965

7.1

2009

7.2

2008

7.2

2009

7.3

2007

4.6

2007

8.1

2005

5.9

2025

0.0

1986

7.2