1986

7.5

1990

7.4

2003

6.7

1987

10.0

1996

4.8

1993

6.9

1951

7.1

1918

0.0

1988

6.0

2000

5.3

2003

5.7

2013

5.6

1983

5.5

2009

8.2

2004

4.6

2005

7.1

2014

5.7

2024

5.9

2004

6.4

2017

7.0