2020

7.2

1972

7.4

1998

7.3

1956

7.0

2000

5.3

1992

6.6

1964

6.0

1990

7.8

1975

7.2

2013

6.1

2009

9.5

2005

7.4

1990

7.3

1956

6.7

2018

6.2

2003

8.1

1994

7.3

1969

6.9

1985

6.6

1980

3.2