Year Percent 1965-01-01 11.424999999667800 1966-01-01 12.242913768340900 1967-01-01 7.296108742308900 1968-01-01 0.391231447309209 1969-01-01 9.785970555473850 1970-01-01 -5.296371422047030 1971-01-01 -3.103849408108510 1972-01-01 -0.251023192089041 1973-01-01 7.970895563186020 1974-01-01 7.458451560828910 1975-01-01 9.119200301456440 1976-01-01 5.479215279688460 1977-01-01 6.280213027509070 1978-01-01 29.379794164169800 1979-01-01 -6.039028750170940 1980-01-01 9.734288794713920 1981-01-01 11.199722607489400 1982-01-01 10.258808855628400 1983-01-01 10.605203619909600 1984-01-01 12.477627205318200 1985-01-01 9.138440554671550 1986-01-01 3.290981045615600 1987-01-01 4.355716878402860 1988-01-01 6.086956521739090 1989-01-01 1.511839708560930 1990-01-01 8.451462408038840 1991-01-01 11.896095301125100 1992-01-01 9.359751589531370 1993-01-01 11.073553272038900 1994-01-01 5.112598904443160 1995-01-01 7.237984944991300 1996-01-01 4.028077753779610 1997-01-01 3.550295857988250 1998-01-01 3.709273182957340 1999-01-01 2.648622522958200 2000-01-01 -2.900000000000240 2001-01-01 -8.813937521455460 2002-01-01 -9.797647058823580 2003-01-01 -2.191151919866430 2004-01-01 -2.197567740559000 2005-01-01 2.650205761316580 2006-01-01 1.459268762027240 2007-01-01 6.250987829935540 2008-01-01 10.360728895499800 2009-01-01 2.459900256099540 2010-01-01 2.799895001092650 2011-01-01 15.518481531756200 2012-01-01 6.059803921568610 2013-01-01 2.605818027195180