1928

6.0

2011

6.4

6.6

1966

6.1

2002

6.5

2015

6.6

1975

7.0

2020

6.7

2005

5.2

1968

6.9

2021

6.7

2010

7.9

1999

4.5

2024

7.2

1993

6.5

1989

5.5

2000

5.2

2017

6.6

2022

7.3