1990

7.4

2003

7.0

2008

6.6

1994

7.0

1989

7.4

1989

9.3

1971

6.4

1997

7.6

1993

6.1

1976

8.1

1983

7.9

1966

7.2

1986

5.8

2011

5.1

1974

8.6

1984

5.4

2008

6.2

2023

9.2

2007

7.8

1996

7.1