do not know what you definition of "end of the century" is, here are the phases of development of the German economy since WW II:
after introduction of German Mark in 1948/1949 until 1973: "Economic Wonder", high growth rates, decreasing unemployment to the point where we hired foreign workers from Italy/Greece/Portugal/Spain,
1973: Oil shock and stagflation: growth rates reduced to 2 - 3 % average until 1990, high inflation which went down by the end of he period to 2 %, rising unemployment up to 8 %
1990: Re-Unification with Eastern Germany triggered a short term high growth rate, but also unemployment increased to nearly 10 % by end of century, economical growth GDP around 1 - 2 %,
significant increase in government debt and deficits as huge investment in East German infrastructure and retirement/health care/ unemployment system. By the end of the century Germany was considered "the sick man of Europe".
From 2002: "Agenda 2010" with major labor market reforms lead to higher employment (today around 6 %), and significant reduction in deficit: today just 8 bn $ and growth rats 2 - 3 % per year.