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Table 5 Confidence intervals for cumulative carbon in HWP for selected years for harvests beginning in 1906. Means and confidence intervals were calculated using Monte Carlo simulation.

From: Estimates of carbon stored in harvested wood products from the United States forest service northern region, 1906-2010

Inventory year

Simulation Mean

(MgC)

90% Confidence interval

  

5%

(MgC)

95%

(MgC)

1910

258,847

151,997

383,534

1920

1,490,397

859,969

2,254,610

1930

2,380,130

1,348,945

3,726,131

1940

2,623,487

1,559,630

4,011,111

1950

4,508,105

2,756,788

6,754,915

1960

9,289,140

5,897,037

13,271,680

1970

17,825,210

11,508,690

25,465,070

1980

23,305,620

14,966,770

33,457,600

1990

27,036,780

19,354,590

35,924,610

1995

28,272,940

20,723,740

37,108,160

2000

27,510,220

20,779,040

35,696,240

2005

26,645,420

19,809,180

34,370,610

2006

26,538,740

19,630,590

34,125,580

2007

26,341,320

19,707,340

33,850,080

2008

26,128,290

19,561,330

33,672,940

2009

25,924,090

19,690,110

33,639,540

2010

25,753,020

19,546,530

33,052,480