7.8

2014

5.6

2015

7.4

1998

6.2

2008

8.7

2010

5.9

2004

7.6

1995

6.8

2023

6.2

2010

6.4

2010

6.9

1967

6.6

1961

8.4

2000

7.0

1997

8.2

1993

7.7

1990

7.4

2007

7.7

1997

8.4

2006

6.9