"In most hospitals, only 2% to 10% of all admitted patients with stroke are treated with thrombolysis, although 25% might be eligible for treatment" - Jeroen et al. (2009), see:

http://stroke.ahajournals.org/content/40/10/3390.full#ref-1

Katzan IL, Hammer MD, Hixson ED, Furlan AJ, Abou-Chebl A, Nadzam DM. Utilization of intravenous tissue plasminogen activator for acute ischemic stroke. Arch Neurol. 2004; 61: 346–350. CrossRefMedline

I do not have statistical information for you, only anecdotal from my professional experience. This treatment depends strongly on the caregivers/doctors making the decision. I worked for years in pre-hospital and emergency department and worked with doctors who were bold and gave TPA to any who qualified and consented (and even one who was unconscious -- w/great success). However, I also worked with others who hesitated to give -- and always traced it back to one disastrous case where they were treating someone appropriately but they died after bleeding. Granted, I have worked at smaller hospitals but I believe this is an area that has great importance. I hope that is helpful.

Management

The RCP and NICE have produced evidence-based reviews of the management of stroke.[5][8] They recommend that:

• Alteplase should only be administered within a well-organised stroke service.
• Staff in such a service should be trained in delivering thrombolysis and in monitoring for any associated complications.
• Care should be provided by level 1 and 2 nursing staff trained in acute stroke and thrombolysis.
• There should be immediate access to imaging and re-imaging and staff appropriately trained to interpret the images.
• Protocols should be instituted for the delivery and management of thrombolysis, including post-thrombolysis complications.
• Staff in A&E departments, if appropriately trained and supported, can administer alteplase for the treatment of acute ischaemic stroke provided that patients can be managed within an acute stroke service with appropriate neuroradiological and stroke physician support.
• Every patient treated with alteplase should be started on aspirin 300 mg daily after 48 hours, unless contra-indicated. This should be continued for 14 days.[9] 

The situation is more complex for acute ischaemic stroke than for coronary thrombosis:

• Only 80% of strokes are ischaemic and giving thrombolysis for a haemorrhagic stroke would be disastrous.
• Stroke tends to be more gradual in onset and may even start during sleep. Hence, patients tend to present later.
• The window of opportunity for effective thrombolysis is four and a half hours from the onset of the stroke and, in that time, a firm diagnosis of ischaemic stroke must be made.
• As a result, only about 1-11% of patients fulfil the criteria.

Cochrane is uncertain as to whether lower doses of thrombolytics are safer or if there is any advantage to intra-arterial over intravenous routes of administration.[10] Intra-arterial treatment tends to be used for posterior stroke but it is still uncertain if it is superior.[11]The important point is early recovery of flow and the vertebrobasilar system appears to take longer to recover.

Clot retrieval is an alternative management method for acute ischaemic stroke.[12] Research is underway looking at the benefits of thrombectomy with thrombolysis.[1] 

http://patient.info/doctor/thrombolytic-treatment-of-acute-ischaemic-stroke

Dear Dr. Ali A R Aldallal :  is  the  benefit  of  thrombolytic  therapy is  document able ? What  if  the  recovery  is  due  to  T.I.A. that  is  spontaneous.

This article is a useful read:

"In order to improve IV tPA rates in acute stroke care, specific health system factors need to be targeted. Multi-component quality improvement approaches can improve IV tPA rates for stroke, although more thoughtfully designed and well-reported trials are required to safely increase rates of IV tPA to eligible stroke patients."

Article How can we improve stroke thrombolysis rates? A review of he...

Hope this helps,

Jatinder