Being not swiss but living in Switzerland, I always enjoy discovering new aspects of the political life here.
One of its most fascinating aspect is the "direct democracy" : Swiss people can directly decide on given topics. Some of the requests to change the Swiss constitution are asked by the government and other by the people themselves. The latest are called "popular initiatives".
One of my close friend here told me that he had the feeling that the number of popular initiatives is increasing lately.
And he was right :
source data. In red are counted the rejected popular initiatives and in green the accepted ones.
However, the big increase in the 70's also coincide with the Swiss people (finally!) allowing women to vote for federal election/initiatives leading to the doubling of the number of voting people. If we add that the swiss population also constantly increases, we can see (click on any bar of the graph and you will see it as well \o/) that the relative number of popular initiative does not increase so dramatically anymore.
So it looks like active participation in the political life directly correlates with the number of people allowed to participate in it...