2009

8.5

2010

9.1

2001

9.4

2019

5.7

2011

7.3

2018

6.4

5.6

1978

5.8

1973

7.2

2002

6.5

2007

6.4

2024

9.5

2017

6.8

1978

9.8

2006

6.1

1997

4.1

1966

6.1