2014

6.2

1975

7.3

2024

4.9

2023

7.5

1990

7.3

1991

6.4

1988

6.8

1986

6.0

2005

6.7

1978

7.4

2020

7.1

1992

5.5

1969

6.9

1966

5.7

2024

6.0

1988

7.1

2000

7.9

2005

7.0

1917

6.7

1998

7.0