1969

6.8

1973

3.3

2017

4.0

1997

5.8

2005

1.0

2017

3.3

1989

6.0

2002

6.5

1933

5.9

1965

3.2

1988

3.9

1968

3.9

1964

1.7

2007

2.5

1964

6.3

2019

5.6

2015

3.9

1917

6.4

1931

5.3

1981

4.8