Error : Invalid Type Iterating over a Map

Can some one plese assist? 
If you look at my wrapper class, there is an inner class EcPerformanceRecordList .I have declared a list<EcPerformanceRecordList>  for getting and setting values between controller and UI
When i try to create a map so that I have a list of EcPerformaceRecordList per User, I get an error when I declare the map as map<String,<list<EcPerformanceRecordList>>
How can i declare a Map and loop through this map so that I can count how many apps have been submitted per user.
e.g 
    UserID  Total  EC(Yes)     Date
    user1   12      4          06/12/2019
    user1   13      13         06/13/2019
    user2   35      24         06/18/2019
    user3   23      31         07/02/2019    
    user1   17       2          07/10/2019
    user3   12       3          07/10/2019
I am trying something like this 
Map<userid, list<ecRecordList>> mapname = newMap<userid, list<ecRecordList>> 
mapname.put(user1, <{user1 12 4 06/12/2019}, {user1 13 13 06/13/2019},{user1 17 2 07/10/2019} )
mapname.put(user2, <{ user2 35 24 06/18/2019}, {user1 13 13 06/13/2019},{user1 17 2 07/10/2019} ) and so on.
then for each user, i want to loop through the list and calculate the totals. 
Here's snippet of my code for reference.  
public with sharing class MyController {
		public list<MyWrapper> wrapper {get;set;}
    	public integer appTotal {get;set;} 
    	public integer mtdappTotal {get;set;} 
    	public integer previousmonthappTotal {get;set;} 
    	public integer idlplusmtdTotal {get;set;}
    	public integer idlpluspreviousmonthTotal {get;set;}
    	public integer caTotal {get;set;}
    	public integer ecmtdTotal {get;set;}
    	public integer ecpreviousmonthTotal {get;set;}
    	public integer ecEligibleYesMTDTotal {get;set;}
    	public integer ecEligibleYesPreviosMonthTotal {get;set;}
    	public set<String> userid {get;set;}
		public Map<String,list<EcPerformanceRecordList>> ecperuserMap {get;set;}
    	@AuraEnabled(cacheable=true)
		public void getdeserialize() {
			try{
                string jsonresponse = 'SOME STRING'
                wrapper = (list<MyWrapper>) JSON.deserialize(jsonresponse, list<MyWrapper>.class);
                // call the method that aggregates the MonthToDate app count, and PreviousMonth app count per user 
                getTotalECBookedByUser(wrapper);
			} catch (Exception e){
				system.debug('Error---->' +  e.getLineNumber() + e.getMessage());
			}
    	}
    // This method calclates the total EC Booked current month and previous month by each user 
    public integer getTotalECBookedByUser(list<MyWrapper> wrapper) {
		Map<String,list<EcPerformanceRecordList>> ecperuserMap = new Map<String,list<EcPerformanceRecordList>>();  
		for(MyWrapper jw: wrapper){
            jw.ecpreviousmonthTotal=0;
			jw.ecmtdTotal = 0;   
        	// create a map of submitUserID and ECSubmittedRecordList 
			Map<String,list<EcPerformanceRecordList>> ecperuserMap = new Map<String,list<EcPerformanceRecordList>>();  
        	for (MyWrapper.EcPerformanceRecordList ec : jw.ecPerformanceRecordList) {
				if(ecperuserMap.containsKey(ec.submitUserID)){
					 ecperuserMap.get(ec.submitUserID).add(ec);
				}else {
					ecperuserMap.put(ec.submitUserID,ec);
				}
            }
        }
		// loop through the map ecperuserMap and count the total apps submitted by each user this month and previous month 
        return ecpreviousmonthTotal;
        return ecmtdTotal;
    }
}
------------------------Wrapper Class ------------------
public class MyWrapper {
@AuraEnabled	
    public List<CaPerformanceRecordList> caPerformanceRecordList{get;set;}
    public List<EcPerformanceRecordList> ecPerformanceRecordList{get;set;}
    public Map<String,List<EcPerformanceRecordList>> ecPerUser {get;set;}
    public integer appTotal{get;set;}
    public integer mtdappTotal {get;set;} 
    public integer previousmonthappTotal {get;set;} 
    public integer idlplusmtdTotal {get;set;}
    public integer idlpluspreviousmonthTotal {get;set;}
    public integer caTotal {get;set;}
    public integer ecmtdTotal {get;set;}
    public integer ecpreviousmonthTotal {get;set;}
    public integer ecEligibleYesMTDTotal {get;set;}
    public integer ecEligibleYesPreviosMonthTotal {get;set;}
    public string name {get;set;}
    public integer data {get;set;}
    public integer data1 {get;set;}		// bar chart EC
    public string ecname {get;set;}  // bar chart EC 
    public integer ecdata {get;set;} // bar chart EC 
    public string ecname1 {get;set;}  // bar chart EC 
    public integer ecdata1 {get;set;} // bar chart EC 
	public class EcPerformanceRecordList {
		public String DealerID{get;set;}
		public String submitUserID{get;set;}
		public String bookedDate{get;set;}
		public String ecEligible{get;set;}
		public Integer caBookedCount{get;set;}
		public Integer ecBookedCount{get;set;}
	}
	public class CaPerformanceRecordList {
		public String DealerID{get;set;}
		public String dealerName{get;set;}
		public String reportingPeriod{get;set;}
		public String financeSourceIntegrationTypeCode{get;set;}
		public String idlPlus{get;set;}
		public String creditApplicationSourceCode{get;set;}
		public Integer submissionCount{get;set;}
    }
}