2018

6.1

1959

7.3

1990

7.7

1983

6.6

1984

7.0

1991

4.5

2005

7.1

2006

7.8

1997

6.1

1987

0.0

2004

5.6

1959

6.9

2000

6.4

2007

5.0

1968

7.6

1976

6.2

1962

4.8

1957

6.2

2020

8.2

2015

6.0