of the Constitution in 2011, Semana confirmed that the acción de tutela was the most widely used judicial mechanism, with 4 million actions submitted across Colombia between 1991 and 2011. In 2013 alone, there were 454,500 actions brought forward, with the most commonly invoked rights being the right to petition (48%), right to health (23%), other economic and social rights (15%), human dignity (14%) and social security (11%). In 69% of cases, the ruling favoured the citizen. However, the wide use of the recourse has led to major backlogs. In 2010, a commission of experts convened by the government for its judicial reform noted that the use of the action had "aggravated the breach of procedural terms, delays and backlogs in the processing of the ordinary cases." Compliance action Article 87 establishes the acción de cumplimiento or compliance action, whereby any individual may demand from the administrative jurisdiction the effective application of a law or administrative decision, although not a constitutional norm. The legal requirement (established by Law 393 of 1997) that the law or decision challenged must not entail public spending has weakened the application of this legal recourse. Popular actions and class or group actions Article 88 establishes acciones populares or popular actions, for the protection of collective rights and interests related to property, space, public safety and health, administrative morality, the environment, free economic competition and other areas of similar nature. The article also refers to a similar mechanism - class or group actions - for actions which harmed a group of individuals (20 or more). Its purpose is remedial and may allow for compensation. Article 90 forces the State to answer materially for any extralegal damages for which it is responsible, caused by the acts or omissions of public authorities. Constitutional bloc The bloque de constitucionalidad or constitutional/constitutionality bloc, established by Article 93, is made up of all international human rights treaties and agreements ratified by Congress. These treaties have equal constitutional validity and the constitutional rights listed by the Constitution are interpreted in accordance with them. Chapter V: Duties and Obligations The fifth and final chapter of the title, made up of Article 95, lists the duties and obligations of Colombians, first and foremost the "duty to exalt and dignify" the national community and the obligation to obey the Constitution and the laws. The nine duties listed are respecting others' rights and not abusing one's