Unless someone else can see a reason for it, I feel that the word "secular" may be in the wrong place. In the context of this article, I would place it as follows:
"Indeed, there has been a rise in the time lost due to secular disruptions in the last five Lok Sabhas from 5% in the 11th (1996-97) to 20% in the 14th (2004-09).". (i.e. There has been an increasing loss of parliamentary time due to non-religious disruptions, rather than because of religious ones).
The previous paragraph includes this sentence:
"Ever since the 2G scam surfaced, Parliament became the site for opposition protests with almost the entire winter session being disrupted in 2010."
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