1931

8.3

1989

7.8

1925

8.0

2002

7.2

1994

7.0

2006

7.1

2006

7.3

1999

6.8

1992

7.7

2001

7.6

2002

0.0

2019

5.9

2019

6.6

1990

7.0

1933

0.0

2015

6.9

1994

7.5

2005

7.4

2016

5.2

2001

6.8