2002

7.1

2006

7.8

2005

6.3

2018

5.6

1975

5.8

1996

8.0

2007

6.1

2014

6.9

1995

7.6

1987

6.2

2015

5.2

2001

4.4

1987

8.6

1936

7.2

1997

4.5

1999

5.7

1992

5.0

2015

6.4

1977

5.6

1987

4.5