1988

5.8

2010

6.1

1977

5.4

2012

8.4

2017

6.1

1988

5.5

1989

5.8

2012

9.4

2021

6.2

2010

7.0

1990

4.4

1994

5.7

2017

7.3

1992

6.5

1993

5.0

2006

7.5

2001

8.9

2020

5.9

2003

6.9

1994

5.8