1952

4.7

1957

6.4

1980

4.2

1950

5.9

2009

5.3

1986

7.4

2002

5.6

1990

6.4

2003

6.2

1981

6.7

2004

5.3

1996

5.9

2018

1.0

1997

6.1

1996

6.0

2025

10.0

1958

7.0

2005

5.8

1954

6.8

2001

5.1