1968

6.9

2019

9.2

2017

5.9

2011

5.7

1993

6.1

2012

6.4

2024

4.8

1947

6.8

1957

7.2

6.0

2007

5.7

1996

6.6

2021

6.5

1989

7.3

2008

5.9

2024

5.8

1990

6.9

2021

6.1

2024

6.1