More than $30 billion in "dirty money" is leaving Brazil each year, an amount that is double what it was a decade ago, Reuters reported.

The money is tied to crime, corruption and tax evasion, and is being funneled out of the country through trade mispricing, according to Global Financial Integrity (GFI), a Washington-based research and advocacy group for financial transparency, Reuters reported.

About 92.7 percent of the $401.6 billion that flowed out of Brazil between 1960 and 2012 is from trade mispricing, equating to annual losses of about 1.5 percent of the country's economic output.

But this does not include bulk cash smuggling, often used by drug traffickers, nor does it include trade in financial services or between multinational corporations.

"Brazil has a very serious problem with illicit financial flows, and curtailing them should be a priority for whichever administration wins the forthcoming elections," Raymond Baker, GFI president, told Reuters. "For many years we have observed reticence in Brazil to address problems of capital flight and illicit outflows."

Efforts by Brazilian President Dilma Rousseff, who has stood against corruption -- removing tainted officials and ministers -- are often overshadowed by the plethora of bribery and corruption allegations that are so widespread.

One such instance is the investigation by the U.S., the Netherlands and Brazil itself, into a bribery case involving contracts for production platforms for the state-owned oil company, Petrobras.

These issues were highlighted by the World Cup being hosted in the country over the summer.

It is important to plug the leak of illicit money in order to help the Latin American country grow, since the money could be included in the revenues instead of being funneled out, Reuters reported.

Almost a decade ago, 1.5 percent of the country's economic output was about $14.7 billion , but in the period between 2010-2012 it averaged about $33.7 billion.