1969

6.9

1968

4.2

2019

5.6

2016

6.8

1961

2.0

1997

5.8

1989

6.0

1965

3.6

1973

4.0

2007

2.7

1933

6.1

1917

6.3

1968

4.1

1960

4.2

1964

1.5

2002

6.5

2005

1.0

1964

6.5

2017

3.7

1988

4.0