1991

7.7

2010

5.2

2009

4.6

1994

6.4

2025

0.0

2017

7.0

1986

4.4

1987

8.0

1975

5.4

2015

7.1

1999

5.6

1974

6.8

2011

7.0

2022

0.0

2018

4.3

1959

7.3

1985

6.2

2017

6.5

1937

7.9

1966

6.8