Look at all these attacks!

The following IP addresses are all from people who tried attacking my computer via SSH. My server has only been up for a couple months but look at how many intrustion attempts there are.

I run a utility called DenyHosts which detects the intrusion attempts and bans them.

sshd: 85.17.121.231
sshd: 195.88.62.132
sshd: 183.62.57.77
sshd: 124.160.194.27
sshd: 114.247.134.7
sshd: 117.25.146.27
sshd: 66.240.245.136
sshd: 14.139.85.167
sshd: 118.244.14.49
sshd: 188.132.176.143
sshd: 211.49.170.77
sshd: 59.38.111.166
sshd: 189.254.67.26
sshd: 195.14.104.8
sshd: 61.156.40.44
sshd: 69.162.65.121
sshd: 118.194.212.10
sshd: 203.201.42.237
sshd: 121.197.15.195
sshd: 1.234.45.178
sshd: 118.26.203.66
sshd: 204.15.135.26
sshd: 200.12.49.147
sshd: 218.108.85.245
sshd: 190.147.33.16
sshd: 66.175.112.244
sshd: 183.232.32.24
sshd: 111.74.134.216
sshd: 120.202.46.75
sshd: 174.139.160.69
sshd: 218.64.114.103
sshd: 207.198.118.254
sshd: 190.29.99.249
sshd: 5.100.249.120
sshd: 61.147.119.215
sshd: 120.101.72.22
sshd: 198.52.110.93
sshd: 61.147.116.33
sshd: 152.160.42.54
sshd: 60.191.232.54
sshd: 222.190.114.98
sshd: 108.171.219.55
sshd: 110.172.52.37
sshd: 221.139.49.85
sshd: 58.211.82.197
sshd: 180.96.71.228
sshd: 109.123.98.212
sshd: 223.4.55.49
sshd: 54.207.1.77
sshd: 218.27.190.133
sshd: 192.241.176.166
sshd: 41.216.216.27
sshd: 81.222.111.218
sshd: 125.211.218.228
sshd: 114.130.138.3
sshd: 192.96.206.85
sshd: 162.243.4.57
sshd: 207.244.68.106
sshd: 122.113.26.13
sshd: 50.7.12.34
sshd: 61.147.70.197
sshd: 222.103.190.147
sshd: 212.193.37.118
sshd: 133.242.178.189
sshd: 198.204.225.106
sshd: 211.141.113.237
sshd: 203.195.182.30
sshd: 210.152.137.48
sshd: 201.173.90.17
sshd: 198.50.195.237
sshd: 91.232.208.38
sshd: 70.182.150.108
sshd: 222.76.211.140
sshd: 113.240.234.2
sshd: 219.153.36.207
sshd: 146.185.246.51
sshd: 198.72.108.200
sshd: 58.48.211.252
sshd: 202.111.52.58
sshd: 219.129.237.113
sshd: 82.165.130.135
sshd: 122.224.130.147
sshd: 151.236.13.213
sshd: 219.232.231.208
sshd: 218.91.200.13
sshd: 42.96.198.214
sshd: 192.252.217.39
sshd: 186.159.112.254