What year did Sufism began?

I was raised sunni Muslim and I don't believe there is an actual day. Sufism is a sect of Islam believed to be recorded as earlier as the first century. When the ruling Muslims were living what was believed to be a decedant life. This group of Muslims seeking to separate themselves from what the believed to be of human lower nature anot of high spirirtual moral code. These were the so called mystics of Islam, they wore a wooly type of fabric called suf.