1997

7.4

1961

7.3

1963

7.0

1964

7.0

1990

8.5

1995

6.6

2006

6.7

1972

7.8

1996

8.0

2022

7.0

1996

7.7

2007

7.9

2003

5.8

2006

7.4

2002

7.3

1971

7.2

1999

7.1

1982

8.1

1999

7.2

2000

7.4