1989

5.8

1988

5.8

1988

5.5

2010

6.1

1990

4.4

2022

6.5

1999

6.8

2004

7.1

2007

5.3

1990

6.3

2003

6.7

2024

6.9

2020

8.1

2011

7.5

1956

7.1

2012

7.1

2020

7.1

2015

8.4

2024

6.1

1963

6.9