Growth continued in the first years of the EU membership. The credit portion of the Financial crisis of 2007-2010 did not affect the Czech Republic much, mostly due to its stable banking sector which has learned its lessons during a smaller crisis in the late 1990s and became much more cautious. As a fraction of the GDP, the Czech public debt is among the smallest ones in Central and Eastern Europe. Moreover, unlike many other post-communist countries, an overwhelming majority of the household debt - over 99% - is denominated in the local Czech currency. That's why the country wasn't affected by the shrunken money supply in the U.S. dollars. However, as a large exporter, the economy was sensitive to the decrease of the demand in Germany and other trading partners. In the middle of 2009, the annual drop of the GDP for 2009 was estimated around 3% or 4.3%, a relatively modest decrease. The impact of the economic crisis may have been limited by the existence of the national currency that temporarily weakened in H1 of 2009, simplifying the life of the exporters.. What is one of the Czech Republic's trading partners?