Top North American Gas Marketers Ranking by Fourth Quarter 2003 Sales Volume

Top North American Gas Marketers (Bcf/d)

Company

4Q03

4Q02

Change

BP

22.30

18.10

23%

Sempra

12.90

10.50

23%

Coral

9.30

8.80

6%

ConocoPhillips

8.60

7.40

16%

Cinergy

3.94

3.72

6%

ChevronTexaco

3.80

4.48

-15%

Tenaska

3.70

3.00

23%

Nexen

3.20

2.20

45%

EnCana

3.10

3.00

3%

ExxonMobil

3.03

3.25

-7%

Oneok

2.57

2.80

-8%

Devon

2.48

2.01

23%

Williams

2.40

3.40

-29%

Amerada Hess

2.20

1.90

16%

Sequent

1.90

NA

NA

Anadarko

1.80

1.30

38%

Burlington

1.75

1.75

0%

Enserco

1.38

1.98

-30%

Western Gas

1.33

1.66

-20%

Dominion

1.07

1.10

-3%

Apache

1.01

0.83

22%

Total *

91.86

83.18

10%

Source: Physical sales volumes for the fourth quarter of 2003 as reported in quarterly financial reports to the Securities and Exchange Commission or if necessary provided to NGI in a statement signed by a company official. * Total excludes Sequent.