1971

0.1

1972

1973

0.2

1974

0.64

1975

0.4

1976

1977

0.8

1978

1979

1

1.6

1980

1981

3.2

1982

1983

6.4

1984

1985

12.8

1986

1987

25.6

1988

1989

51.2

1990

1991

102.4

1992

54

1993

204.8

1994

35

1995

409.6

1996

35.9

1997

525

819.2

1998

400

1999

80

1638.4

2000

2001

3276.8

2002

2003

9726

6553.6

2004

2005

25150

13107.2

2006

27100

2007

26214.4

2008

2009

42427

52428.8

2010

2011

84854

2012

2013

2014

2015

2016

2017

2018

2019

2020

2021

2022

2023

2024

2025

2026

2027

2028

2029

2030

2031