2018

5.8

2015

5.7

1985

6.0

1990

7.5

1993

7.8

1996

7.6

1962

5.1

1931

4.2

1989

7.8

1962

7.2

2013

5.5

2014

7.5

2018

6.5

2013

6.7

2000

6.2

2016

6.7

1993

5.8

1994

7.0

2004

6.4

2008

6.7