1957

7.0

1991

6.9

1963

6.6

2015

5.4

1994

5.0

2007

5.4

2019

7.2

2004

5.6

2004

8.1

2005

7.4

2013

4.8

2012

3.3

2006

5.7

2016

6.2

2002

4.0

1960

8.0

1997

6.1

2009

7.1

2022

6.0

2006

5.5