1982

7.0

1983

6.9

1998

6.2

1988

6.8

2019

7.4

2006

7.0

1954

6.9

1995

4.9

2006

6.3

2002

6.7

2020

6.7

1989

7.1

2004

8.1

1984

8.1

1984

8.4

1999

7.7

2004

7.2

2002

7.6

1973

2.0

2019

6.2