2019

8.6

2014

6.5

2022

6.0

2023

6.4

2004

7.7

1999

7.8

1964

7.4

1988

5.6

1962

6.9

1974

5.8

1985

6.7

1975

7.3

1985

4.8

1972

7.4

2003

9.3

1999

7.0

2005

7.3

2000

8.5

1983

7.6

1995

6.3