1959

5.3

2006

6.8

2021

6.2

2023

6.1

1991

5.7

2017

6.6

2019

6.6

1991

5.0

1994

6.4

1978

5.9

1993

5.4

2024

7.7

2003

6.8

1980

6.6

5.0

2015

6.5

2000

5.1

1975

4.5

2006

6.1

2017

6.9