2014

6.1

2011

7.5

2023

7.4

2011

6.9

2001

6.7

1997

6.0

1991

6.5

2024

6.3

2009

5.5

1996

7.4

2002

4.4

2008

6.8

2013

7.6

1985

6.7

1977

6.8

2012

5.3

2000

5.1

1982

5.2

1976

8.1

2012

8.4