1999

6.3

2003

6.4

2005

6.1

1942

6.0

1979

4.0

1959

8.0

1973

6.5

1965

3.7

1962

6.5

1985

6.2

2002

5.7

1969

4.5

2019

3.3

2019

7.6

1997

6.1

2002

4.3

1985

6.2

1999

6.4

2008

6.2

1966

6.2