1993

6.2

1990

6.7

1990

6.0

1978

6.3

1981

7.3

1991

6.1

1988

6.2

2003

5.8

1996

5.6

2001

6.5

1989

7.2

1988

7.0

1994

6.6

2001

5.7

1993

6.6

2022

7.3

2002

6.7

1981

6.5

1986

6.2

1973

6.4