April 15 (Reuters) - Car bombs on crowded streets killed more than 50 people in Sunni Arab areas of Iraq on Tuesday.

Here is a list of some of the deadliest bomb attacks in Iraq in the past year:

March 6, 2007 - Two suicide bombers strike in Hilla, south of Baghdad, killing 105 pilgrims. Insurgents launch a total of 12 attacks against Shi'ite pilgrims. In all, 137 pilgrims are killed and 310 are wounded.

March 27 - A truck bomb explodes in Tal Afar, close to the Syrian border and the regional capital Mosul, killing 152 people.

April 18 - Multiple car bombings kill 191 people around Baghdad. One car bomb near a market in the central Sadriya neighbourhood kills 140 people and wounds 150.

April 28 - A suicide car bomber kills 60 people and wounds 170 at a checkpoint in Kerbala.

May 13 - Suicide truck bombing in northern town of Makhmour kills 50, with 70 people wounded.

June 19 - A car bomb near the Khilani Shi'ite mosque in central Baghdad kills 87 people.

July 7 - A truck packed with explosives covered with hay blows up in a crowded market in the northern town of Tuz Khurmato, killing 150 people and wounding 250.

July 16 - Eighty-five people are killed by a suicide truck bomb in the city of Kirkuk. At least 180 are wounded.

Aug. 14 - At least three suicide bombers driving fuel tankers kill and wound at least 796 people in Yazidi residential compounds in the villages of Kahtaniya and al-Jazeera in northern Iraq near the Syrian border, the worst attack since the U.S.-led invasion in 2003. Yazidis are members of a pre-Islamic Kurdish sect who live in northern Iraq and Syria.

Feb 1, 2008 - Female bombers kill 99 people in attacks blamed on al Qaeda at two popular Baghdad pet markets, the city's worst attacks in six months.

Feb 24 - A suicide bomber targeting pilgrims heading to one of Shi'ite Islam's holiest rites in southern Kerbala kills 63 people and wounds scores in Iskandariya.

March 6 - Two bombs explode in Baghdad's mainly Shi'ite Karrada district, killing at least 68 people. Another 120 were wounded in the blasts.

April 15 - A car bomb kills 40 people and wounds 80 outside a provincial government headquarters in Baquba, local capital of Diyala province. Another car bomb, believed to be driven by a suicide attacker, explodes outside a popular restaurant in Ramadi, capital of Anbar province, killing 13. (Writing by David Cutler, London Editorial Reference Unit)

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