2018

4.7

2016

5.9

1973

7.6

2009

6.7

2024

9.9

1977

5.4

1993

6.3

2015

5.1

1991

5.6

2001

5.8

1973

5.0

2001

8.0

2002

5.5

2004

6.7

2009

7.3

1958

6.4

1978

6.1

2017

6.5

2020

6.4

2022

7.1