1965

5.5

1999

7.3

2007

7.6

1972

6.9

2014

4.0

2019

8.4

2000

7.0

2002

7.1

2008

7.7

1988

7.5

1971

8.1

1976

6.0

2022

7.5

1991

6.1

2004

8.5

1984

7.4

2003

7.8

1997

7.5

1994

6.0

1996

7.1