1991

5.4

1997

6.3

2009

8.5

1931

5.8

1912

4.7

2019

6.0

2023

10.0

1959

4.8

1954

8.0

1981

7.0

1989

5.0

2017

5.0

2000

5.5

2004

5.6

1968

5.0

2018

8.0

1994

4.3