I need to populate the empty columns with corresponding values within that year, it could be that I have to repeat the entry of the values (for instance fill up 2004 with the same values-128, 2005-130, 2006-130, 2007-127). Any suggestions of the right code to use? This is just an example, I have observations of over 6 million: 24 countries,
year | country | GDP |
2004 | SE | 128 |
2004 | SE | |
2004 | SE | |
2005 | SE | 131 |
2005 | SE | |
2005 | SE | |
2006 | SE | 130 |
2006 | SE | |
2006 | SE | |
2007 | SE | 127 |
2007 | SE | |
2007 | SE | |
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