part i item 1 .
business our company founded in 1886 , american water works company , inc. , ( the 201ccompany , 201d 201camerican water 201d or 201caww 201d ) is a delaware holding company .
american water is the most geographically diversified , as well as the largest publicly-traded , united states water and wastewater utility company , as measured by both operating revenues and population served .
as a holding company , we conduct substantially all of our business operations through our subsidiaries .
our approximately 6400 employees provide an estimated 15 million people with drinking water , wastewater and/or other water-related services in 47 states and one canadian province .
operating segments we report our results of operations in two operating segments : the regulated businesses and the market- based operations .
additional information with respect to our operating segment results is included in the section entitled 201citem 7 2014management 2019s discussion and analysis of financial condition and results of operations , 201d and note 18 of the consolidated financial statements .
regulated businesses our primary business involves the ownership of subsidiaries that provide water and wastewater utility services to residential , commercial , industrial and other customers , including sale for resale and public authority customers .
we report the results of this business in our regulated businesses segment .
our subsidiaries that provide these services are generally subject to economic regulation by certain state commissions or other entities engaged in economic regulation , hereafter referred to as public utility commissions , or 201cpucs , 201d of the states in which we operate .
the federal and state governments also regulate environmental , health and safety , and water quality matters .
our regulated businesses segment operating revenues were $ 2674.3 million for 2014 , $ 2539.9 for 2013 , $ 2564.4 million for 2012 , accounting for 88.8% ( 88.8 % ) , 90.1% ( 90.1 % ) and 89.9% ( 89.9 % ) , respectively , of total operating revenues for the same periods .
the following table sets forth our regulated businesses operating revenues , number of customers and an estimate of population served as of december 31 , 2014 : operating revenues ( in millions ) % (  % ) of total number of customers % (  % ) of total estimated population served ( in millions ) % (  % ) of total .

OperatingRevenues(In millions)
% of Total
Number ofCustomers
% of Total
EstimatedPopulationServed(In millions)
% of Total
New Jersey
$652.3
24.5%
648,066
20.2%
2.7
22.7%
Pennsylvania
605.4
22.6%
666,415
20.7%
2.2
18.5%
Missouri
270.2
10.1%
464,498
14.4%
1.5
12.7%
Illinois (a)
262.3
9.8%
312,017
9.7%
1.3
10.9%
California
209.8
7.8%
174,198
5.4%
0.6
5.0%
Indiana
200.6
7.5%
293,666
9.1%
1.2
10.1%
West Virginia (b)
127.0
4.7%
170,371
5.3%
0.6
5.0%
Subtotal (Top Seven States)
2,327.6
87.0%
2,729,231
84.8%
10.1
84.9%
Other (c)
346.7
13.0%
489,961
15.2%
1.8
15.1%
Total Regulated Businesses
$2,674.3
100.0%
3,219,192
100.0%
11.9
100.0%

( a ) includes illinois-american water company , which we refer to as ilawc and american lake water company , also a regulated subsidiary in illinois. .

Question: Analyse this data from a financial earnings document. what is the approximate customer penetration in the pennsylvania market area?
Choices:
3.30125
0
3.6047
0.30292
0.37023
Correct choice index: 3