Years

Oil palm

Okro

Corn

Cement

Umbrella

Sharp sand

Zinc

Nails

Coca-Cola drink

2004

2500

13,000

2700

1400

200

1500

7600

680

850

2005

2500

14,000

2500

1500

250

2000

7600

700

850

2006

3000

15,500

2800

1600

300

2000

7600

700

980

2007

3500

17,000

2800

1650

300

2000

7900

750

980

2008

4000

18,000

3000

1550

350

3500

8050

790

950

2009

6000

19,000

2800

1700

350

3500

8050

790

950

2010

7500

19,500

3000

1650

400

3000

8200

790

1000

2011

6000

20,000

3200

1750

400

3000

8300

900

1000

2012

6500

20,000

3500

1800

450

3000

8350

990

1000

2013

6500

20,000

7000

1850

500

3000

8300

835

1000

2014

6700

20,300

9000

1900

600

3200

8500

850

1050

2015

7200

21,000

10,000

2000

650

3700

8620

900

1050

Mean

5158

18,108

4358

1696

396

2783

8261

806

972