2018

5.6

2004

5.3

1973

6.5

1989

6.1

2002

6.3

2002

5.9

2005

6.7

1985

6.1

1984

6.6

1990

6.1

2020

4.2

1968

6.2

1994

0.0

1955

0.0

2003

5.7

2007

7.4

1986

5.6

1994

7.1

1988

6.7

2014

6.5