NAT Translations Maxed Out?

Hi Team. I need your help check if this log if this means that our NAT translations are getting maxed out? There are 100s of small businesses in our area that are using this router for internet. We have 6 public IPs being used for NAT overload. There are times during business hours that connections to internet are getting dropped. A router reboot (which resets all connections) that makes issues fixed temporarily then the next day it happens again.

Router#show ip nat statistics Total active translations: 29289 (19 static, 29270 dynamic; 29265 extended) Outside interfaces: Vlan10, Vlan20, Vlan40 Inside interfaces: Vlan30 Hits: 234498362 Misses: 1197380 Expired translations: 1149668 Dynamic mappings: -- Inside Source [Id: 1] access-list 55 pool net-public-ip refcount 28143 pool nnet-public-ip: id 1, netmask 255.255.255.248 start public-ip-x.x.x.1 end public-ip-x.x.x.6 type generic, total addresses 6, allocated 6 (100%), misses 0 nat-limit statistics: max entry: max allowed 0, used 0, missed 0 In-to-out drops: 550 Out-to-in drops: 0 Pool stats drop: 0 Mapping stats drop: 0 Port block alloc fail: 0 IP alias add fail: 0 Limit entry add fail: 0 

Thank you for your help.