1999

6.6

2017

4.9

2002

5.5

2001

6.2

1974

5.3

1996

6.8

1976

7.0

2005

6.2

2023

7.2

2000

6.2

2002

5.3

1976

3.6

1976

5.7

2001

4.5

2002

5.6

1972

6.5

1978

6.5

2004

6.7

2006

4.5

2001

5.1