Answer based on context:

On 1 January 2007 Bulgaria entered the European Union. This led to some immediate international trade liberalization, but there was no shock to the economy. The government ran annual surpluses of above 3%. This fact, together with annual GDP growth of above 5%, has brought the government indebtedness to 22.8% of GDP in 2006 from 67.3% five years earlier. This is to be contrasted with enormous List of countries by current account balance. Low interest rates guaranteed availability of funds for investment and consumption. For example, a boom in the real estate market started around 2003. At the same time annual inflation in the economy was variable and during the last five years (2003–2007) has seen a low of 2.3% and high of 7.3%. Most importantly, this poses a threat to the countrys accession to the Eurozone. The Bulgarian government originally planned to adopt the Euro no sooner than 2015. Although Bulgaria will have to adopt the euro as a condition to membership, plans have since been postponed for better economic times. From a political point of view, there is a trade-off between Bulgarias economic growth and the stability required for early accession to the monetary union. Bulgarias per-capita Purchasing power parity GDP is still only about a half of the 2007 enlargement of the European Union average, while the countrys nominal GDP per capita is about 20% of the EU27 average. However, Bulgaria ranks 38th (2015) in the Ease of Doing Business Index, higher than most other Eastern European states, and 40th (2012) in the Economic Freedom of the World index, outperforming Belgium, Spain, Poland, Hungary, Portugal. Bulgaria also has the lowest personal and corporate income tax rates in the EU, as well as the second lowest public debt of all European Union member states at 16.2% of GDP in 2010.

Was the government indebtedness in Bulgaria lower in 2006 or 2001?
2006