observation_date,GPDIA
1960-01-01,86.477
1961-01-01,86.584
1962-01-01,96.977
1963-01-01,103.284
1964-01-01,112.150
1965-01-01,129.645
1966-01-01,144.188
1967-01-01,142.700
1968-01-01,156.923
1969-01-01,173.562
1970-01-01,170.049
1971-01-01,196.824
1972-01-01,228.140
1973-01-01,266.925
1974-01-01,274.526
1975-01-01,257.253
1976-01-01,323.224
1977-01-01,396.613
1978-01-01,478.377
1979-01-01,539.657
1980-01-01,530.098
1981-01-01,631.229
1982-01-01,581.034
1983-01-01,637.518
1984-01-01,820.089
1985-01-01,829.650
1986-01-01,849.146
1987-01-01,892.176
1988-01-01,936.963
1989-01-01,999.701
1990-01-01,993.448
1991-01-01,944.344
1992-01-01,1013.006
1993-01-01,1106.826
1994-01-01,1256.484
1995-01-01,1317.489
1996-01-01,1432.055
1997-01-01,1595.600
1998-01-01,1736.671
1999-01-01,1887.059
2000-01-01,2038.408
2001-01-01,1934.842
2002-01-01,1930.417
2003-01-01,2027.056
2004-01-01,2281.253
2005-01-01,2534.720
2006-01-01,2700.954
2007-01-01,2673.011
2008-01-01,2477.613
2009-01-01,1929.664
2010-01-01,2165.473
2011-01-01,2332.562
2012-01-01,2621.754
2013-01-01,2838.327
2014-01-01,3073.981
2015-01-01,3288.481
2016-01-01,3278.305
2017-01-01,3467.664
2018-01-01,3724.770
2019-01-01,3893.734
2020-01-01,3763.386
2021-01-01,4246.545
2022-01-01,4844.333
2023-01-01,5023.712
2024-01-01,5259.320