2014

5.3

2015

5.7

1990

0.0

2017

6.8

1998

7.5

1991

6.8

1995

7.3

1991

7.3

1981

7.2

1919

6.9

1974

4.2

1984

6.0

1994

3.7

2001

6.3

1999

7.3

1997

6.4

2019

7.3

1989

0.0

1946

7.4

2000

4.8