Ordering and filling Missing values in Excel 2010

Dear all,
I am currently facing a problem with a large dataset. Attached with this post is a sample excel file, where data for certain countries is presented. As can be seen from the first 4 columns, some year are missing from the dataset. I want to re organize the data and fill the missing values, any ideas how to do it. Manually is one option, but the real dataset that I am working on has more than 2,650,841 rows of data, hence is almost impossible for me to do. Any help would be highly appreciated. Thanks

Yasir