SSH attack usernames

Today I received 201 ssh attacks against one of my servers. I logged all of the attempted usernames:

Times Used & Username
1 (space)
1 Fake
1 anon
1 anonymous
1 apple
1 bin
1 cisco
1 cron
1 db2iadm1
1 db2inst
1 eaguilar
1 ftp
1 ftpuser
1 http
1 httpd
1 jiong
1 jiseong
1 jitendra
1 jnye
1 jo
1 joan
1 joann
1 joanne
1 joaquim
1 jocelyn
1 temp
1 tester
1 testuser
1 tom
1 tomcat
1 ts
1 user01
1 utstat
1 zenoss
2 account
2 deploy
2 fluffy
2 git
2 marine
2 openerp
2 oracle
2 postgres
2 ts3
3 aaron
3 debian
3 dff
3 dup
3 ubuntu
4 muie
4 sfkfds
4 vagrant
4 zhangyan
5 guest
6 support
8 a
10 PlcmSpIp
10 test
11 pi
14 ubnt
14 user
40 admin

Not a single username exists on this server. Such random. Many fail.