1989

9.3

2009

6.3

2024

9.9

2014

9.7

2011

5.3

2012

6.1

1978

6.0

2010

5.8

2009

7.0

2012

8.4

2007

5.7

2002

7.3

2004

6.6

1993

6.3

1956

7.1

2009

8.5

2013

6.8

2022

8.1

2007

6.9

1984

7.1