Is it my responsibility to provide for my family according to Islam?

As-Salamu-alaikum Brother, A question about family issue: I am the youngest member of our family and have been in overseas for 5 yrs. I am sending money regularly to home which is good enough for the whole family (my mother, elder brother and elder sister). Although they are earning, that’s not good enough. The problem is that my family members? expectation is increasing day by day and creating psychological pressure. By the grace of Allah, I am earning a good amount of money in overseas, but don’t want them to be dependable on me. Needless to say that I have paid all the loans of my father, that was a huge amount. My question: 1. Is it my responsibility to look after the whole family? (Except my mother) 2. What does Islam say about this? Please answer in detail.