cargo 3, chemical tanker 3, combination ore/oil 1,
liquefied gas 5, petroleum tanker 25, roll on/roll off 9,
short-sea/passenger 3
foreign-owned: Denmark 1, Germany 1, Greece 1, Marshall Islands 1,
Netherlands 2
registered in other countries: 13 (2004 est.)

Airports:
1,827 (2003 est.)

Airports - with paved runways:
total: 233
over 3,047 m: 12
2,438 to 3,047 m: 28
914 to 1,523 m: 80
under 914 m: 29 (2004 est.)
1,524 to 2,437 m: 84

Airports - with unpaved runways:
total: 1,600
under 914 m: 1,075 (2004 est.)
over 3,047 m: 1
2,438 to 3,047 m: 1
914 to 1,523 m: 454
1,524 to 2,437 m: 69

Heliports:
2 (2003 est.)

Military Mexico

Military branches:
National Defense Secretariat (Sedena) (including Army and Air
Force), Navy Secretariat (including Naval Air and Marines)

Military manpower - military age and obligation:
18 years of age for compulsory military service, conscript service
obligation - 12 months; 16 years of age with consent for voluntary
enlistment (2004)

Military manpower - availability:
males age 15-49: 27,374,153 (2004 est.)

Military manpower - fit for military service:
males age 15-49: 19,755,614 (2004 est.)

Military manpower - reaching military age annually:
males: 1,055,368 (2004 est.)

Military expenditures - dollar figure:
$5,168.3 million (2003)

Military expenditures - percent of GDP:
0.9% (2003)

Transnational Issues Mexico

Disputes - international:
prolonged drought, population growth, and outmoded practices and
infrastructure in the border region have strained water-sharing
arrangements with the US; nationals from Central America slip into
Mexico seeking work or transit into the US; undocumented Mexican
nationals continue to enter the United States

Refugees and internally displaced persons:
IDPs: 12,000 (government's quashing of Zapatero uprising in 1994 in
eastern Chiapas Region) (2004)

Illicit drugs:
illicit cultivation of opium poppy (cultivation in 2001 - 4,400
hectares; potential heroin production - 7 metric tons) and of
cannabis (in 2001 - 4,100 hectares); government eradication efforts
have been key in keeping illicit crop levels low; major supplier of
heroin and largest foreign supplier of marijuana and methamphetamine
to the US market; continues as the primary transshipment country for
US-bound cocaine from South America, accounting for about 70 percent
of