1987

6.9

1968

7.4

1995

5.9

2003

6.3

2005

7.0

1970

7.5

1985

6.6

1987

4.3

1994

6.1

2016

7.5

2014

4.0

1963

6.7

2021

7.5

2000

6.3

2019

6.6

2005

2.7

1990

6.5

2018

7.0

2013

0.0

2007

8.3