1974

6.5

1984

5.7

2022

9.9

2023

9.3

1990

5.5

2019

6.8

2009

7.1

1968

6.4

2005

5.2

2012

7.0

2011

9.1

1966

6.5

2010

6.3

2019

7.2

1989

6.1

1955

6.1

2007

6.1

1959

6.6

2014

7.2

2017

8.1