Year Index 2010=1, Trend 1970-01-01 0.329246164614259 1971-01-01 0.347173860664002 1972-01-01 0.361229842650605 1973-01-01 0.383211107987422 1974-01-01 0.445250595254480 1975-01-01 0.508542482082114 1976-01-01 0.536823860151822 1977-01-01 0.575431107743945 1978-01-01 0.619984653586961 1979-01-01 0.675957509508810 1980-01-01 0.751264997465508 1981-01-01 0.817106922878793 1982-01-01 0.869609853179591 1983-01-01 0.889362522307612 1984-01-01 0.906668307901492 1985-01-01 0.919109341514177 1986-01-01 0.951080316160515 1987-01-01 0.948922817376307 1988-01-01 0.947755252741264 1989-01-01 0.976224420470745 1990-01-01 1.004949756419150 1991-01-01 1.046583918087760 1992-01-01 1.077749044289310 1993-01-01 1.096319919361300 1994-01-01 1.079414429756740 1995-01-01 1.057991101389560 1996-01-01 1.049736537014160 1997-01-01 1.045331625775380 1998-01-01 1.043329658379150 1999-01-01 1.030015997442910 2000-01-01 1.026940862579180 2001-01-01 1.051754869763930 2002-01-01 1.030560673953050 2003-01-01 1.021670796860650 2004-01-01 0.985441013372968 2005-01-01 0.981621934597775 2006-01-01 0.984838880806094 2007-01-01 0.975822556149591 2008-01-01 1.006274988907210 2009-01-01 1.009553612245330 2010-01-01 1.000000000001020