2021

6.8

1998

6.8

1998

6.1

2006

6.7

1987

6.6

1993

7.3

2009

6.0

2002

6.1

1978

6.3

1995

7.3

1988

6.2

1993

4.5

1997

6.2

2014

6.3

1984

6.8

2004

6.6

1990

5.5

1995

6.3

2005

7.2

1997

6.5