2000

6.2

1943

6.1

2012

8.2

1999

7.1

1998

7.9

1997

7.6

1998

7.0

1996

5.9

1964

7.4

2019

6.8

1995

6.4

1968

6.6

1971

6.5

1979

6.5

2007

5.9

1977

6.8

2015

7.8

1956

6.6

2006

7.5

1973

8.0