1982

6.7

1998

5.4

2021

6.8

2024

3.5

2007

6.5

1976

7.0

2024

8.0

1994

6.8

2017

7.8

1979

6.7

2004

7.1

2008

7.2

2001

7.4

1990

6.2

1991

7.6

1981

7.4

1998

7.0

1993

7.7

1996

6.0

2023

5.0