Another Important Data :
http://open.canada.ca/data/en/dataset/427337d0-7c36-4fed-8428-c6a63f8c19b3
If you download this excel file and play around, specifically select Delhi, you can figure out that they processed 50% of 2013 spousal/children class files within 8 months and 50 % of same category files of 2014 in 10 months.
What it means is, even though they have some pending files from previous year, they process files from new year(2015). Just thought to share.
P.S. this Excel file is really interesting if you play around, lot of data!!!!