2020

8.9

1968

8.1

1995

7.6

1985

7.7

2000

7.6

1996

6.4

2000

8.2

1984

7.2

1933

7.0

1998

6.8

1959

7.8

2002

7.5

1987

6.5

1999

7.6

1998

8.1

1985

8.3

2000

7.8

1994

7.5