2019

6.4

1985

6.7

1972

6.8

1991

5.8

1975

6.4

1998

6.2

2003

6.3

2002

5.5

2000

5.8

2002

4.3

1985

6.2

2006

5.8

2003

6.3

1990

6.6

2005

5.0

1995

5.6

1999

6.4

1988

5.9

1988

6.2

1997

4.6