1993

5.5

2004

6.8

2009

7.1

1988

5.5

1961

5.8

2011

5.7

1973

7.2

2010

5.1

1995

5.9

2018

5.5

2018

6.9

2013

7.6

1992

6.3

2022

5.6

2018

7.4

1972

4.0

2018

8.7

2023

6.8

1941

5.4

2015

7.5