2018

4.7

1983

5.9

1999

7.1

2007

5.6

2008

6.6

2023

6.0

2009

6.3

1967

5.7

1992

4.3

1997

6.8

1990

5.0

1932

7.4

2000

6.9

1968

7.1

1987

7.3

1989

7.0

1992

6.7

1998

6.6

1987

6.8

1975

7.8