1968

6.9

7.8

1993

6.1

2014

5.7

1974

8.6

2005

5.2

2023

6.5

1940

6.3

2001

6.9

1998

6.1

1989

4.5

2009

5.7

1996

6.5

2003

6.8

1990

7.4

1984

7.1

1965

6.8

2024

7.6

2015

6.7

1943

8.2