I sent my dataset, I run regresion INF on PBI

My series from this regression are: uhat=INF-yhat
Why all uhat are negatives?
Excuse me, I couldn't speak English very well. 
              INF          PBI             uhat        yhat

1950       10,290      40920,0     -251,328     261,6187
1951        9,954      44711,0     -250,035     259,9892
1952        6,921      47347,0     -251,935     258,8562
1953        9,087      50085,0     -248,593     257,6794
1954        5,405      52762,0     -251,124     256,5288
1955        4,702      55858,0     -250,496     255,1981
1956        5,474      58484,0     -248,595     254,0694
1957        7,400      62371,0     -244,999     252,3987
1958        7,941      61706,0     -244,744     252,6845
1959       12,702      63653,0     -239,145     251,8476
1960        8,626      69946,0     -240,517     249,1428
1961        6,020      75085,0     -240,914     246,9340
1962        6,618      82620,0     -237,077     243,6953
1963        6,023      86196,0     -236,135     242,1583
1964        9,853      91840,0     -229,879     239,7324
1965       16,363      97003,0     -221,150     237,5132
1966        8,889     104995,0     -225,189     234,0781
1967       11,455     109040,0     -220,884     232,3395
1968       19,117     109206,0     -213,151     232,2682
1969        6,231     113044,0     -224,388     230,6185
1970        5,017     116849,0     -223,966     228,9831
1971        6,807     122213,0     -219,871     226,6775
1972        7,192     126463,0     -217,659     224,8508
1973        9,513     134401,0     -211,925     221,4389
1974       16,877     147017,0     -199,139     216,0163
1975       23,634     153340,0     -189,665     213,2986
1976       33,495     155559,0     -178,850     212,3448
1977       38,042     156102,0     -174,069     212,1114
1978       57,850     151977,0     -156,034     213,8844
1979       67,698     158194,0     -143,515     211,2122
1980       59,161     167596,0     -148,011     207,1711
1981       75,418     176901,0     -127,754     203,1716
1982       64,460     176507,0     -138,881     203,3410
1983      111,149     158136,0     -100,088     211,2372
1984      110,209     163842,0      -98,576     208,7846
1985      163,398     167219,0      -43,935     207,3331
1986       77,921     182981,0     -122,637     200,5584
1987       85,846     200778,0     -107,063     192,9089
1988      666,955     181822,0      465,899     201,0565
1989     3398,272     159436,0     3187,593     210,6784
1990     7481,691     151492,0     7267,598     214,0929
1991      409,528     154854,0      196,880     212,6478
1992       73,529     154017,0     -139,479     213,0076
1993       48,580     162093,0     -160,957     209,5364
1994       23,735     182043,7     -177,227     200,9612
1995       11,131     195536,0     -184,031     195,1620
1996       11,549     201009,3     -181,260     192,8095
1997        8,547     214028,3     -178,667     187,2137
1998        7,255     213190,0     -180,319     187,5740
1999        3,469     216376,7     -182,735     186,2043
2000        3,759     222206,7     -179,940     183,6984
2001        1,975     223579,6     -181,133     183,1084
2002        0,192     235772,9     -177,676     177,8674
2003        2,261     245592,6     -171,386     173,6468
2004        3,662     257769,8     -164,751     168,4128
2005        1,618     273971,2     -159,831     161,4492
2006        2,001     294597,8     -150,582     152,5835
2007        1,779     319693,0     -140,018     141,7971
2008        5,788     348923,0     -123,446     129,2335
2009        2,935     352584,0     -124,725     127,6600
2010        1,530     382380,0     -113,324     114,8531
2011        3,370     407052,0     -100,879     104,2487
2012        3,655     431273,0      -90,183      93,8381
2013        2,806     456365,6      -80,247      83,0528
2014        3,246     467275,8      -75,117      78,3634
2015        3,548     482809,0      -68,139      71,6870
2016        3,599     501621,9      -60,001      63,6008

2017-03-01 9:45 GMT-05:00 HEBERT SUAREZ CAHUANA <hsuarezc@unsa.edu.pe>:

I installed Gretl 2016.d when I run a regression OLS and I generate forecast or save residuals every residual is lower cero or each residual is negative, it is not posible.

Whats up in Gretl? Perhaps any problem in program code.

--

Hebert Suarez Cahuana

Economics Department

Saint Augustin University

Peru

"Ninguna nación llegó a la ruina por el libre comercio" Benjamin Franklin

--

Hebert Suarez Cahuana

Secretario del Departamento de Economía

Universidad Nacional de San Agustín

Arequipa-Perú

"Ninguna nación llegó a la ruina por el libre comercio" Benjamin Franklin

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