1993

7.1

2001

4.7

2016

4.1

1994

4.6

2004

6.2

1978

6.5

1988

5.0

1985

7.4

1989

7.1

1989

6.4

2021

7.2

1982

7.3

1951

7.3

1999

6.0

1995

6.1

2011

5.7

1984

6.5

1996

5.7

2016

6.5

1991

6.2