Incomplete example of how to track Unity coroutines.

CoroutineTracker.cs

using UnityEngine;
using System.Collections;
using System.Collections.Generic;

/// <summary>
/// Coroutine tracker.
/// 
/// Custom handler for coroutines that tracks when they start and stop...
/// Uses Singleton class from: http://wiki.unity3d.com/index.php/Singleton
/// </summary>
public class CoroutineTracker : Singleton<CoroutineTracker> {
	Dictionary<string,int> CoroutineInstanceMap = new Dictionary<string, int>();

	/// <summary>
	/// Hideous hack to wrap Monobehaviour.StartCoroutine
	/// 
	/// Non-virtual methods cannot be overridden so use method-hiding
	/// to allow the use of method name `StartCoroutine`.  Know that
	/// this is an awful hack that screws up polymorphism.  
	/// 
	/// Seriously, don't blame me when someone hates on you for 
	/// using method-hiding and a Singleton in the same class
	/// 
	/// Ref: http://stackoverflow.com/questions/1853896/is-it-possible-to-override-a-non-virtual-method
	/// </summary>
	public new void StartCoroutine(IEnumerator routine){
		var key = routine.ToString ();
		if (!CoroutineInstanceMap.ContainsKey (key)) {
			CoroutineInstanceMap[key] = 0;
		}
		CoroutineInstanceMap [key] += 1;

		// all routines must be wrapped in a decrementer that updates CoroutineInstanceMap
		base.StartCoroutine (DecrementRoutine(routine));    
	}

	/// <summary>
	/// Dump all instance counts to command line
	/// </summary>
	public void DumpRunningInstances(){
		foreach (var kvp in CoroutineInstanceMap) {
			var key = kvp.Key;
			Debug.Log (string.Format("{0} instances of {1} running",
			                         CoroutineInstanceMap [key],
			                         key));
		}
	}

	/// <summary>
	/// Remove coroutine instance from map, clears key from the map if # instances are zero
	/// </summary>
	IEnumerator DecrementRoutine(IEnumerator routine){
		var key = routine.ToString ();

		yield return base.StartCoroutine (routine);
		CoroutineInstanceMap [key] -= 1;
		Debug.Log (string.Format("Instance stopped, {0} instances of {1} running",
		                         CoroutineInstanceMap [key],
		                         key));

		if (CoroutineInstanceMap [key] == 0) {
			Debug.Log (string.Format("No more instances of {0} running",key));
			CoroutineInstanceMap.Remove (key);
		}
	}
}

Example.cs

using UnityEngine;
using System.Collections;

public class ExampleCoroutines : MonoBehaviour {
	// Use this for initialization
	void Start () {
		CoroutineTracker.Instance.StartCoroutine (WaitAndMove (2.0f));
		CoroutineTracker.Instance.StartCoroutine (WaitAndMove (3.0f));
		CoroutineTracker.Instance.StartCoroutine (WaitAndMove (4.0f));
		CoroutineTracker.Instance.StartCoroutine (WaitAndMove (5.0f));
		CoroutineTracker.Instance.StartCoroutine (WaitAndMove (6.0f));

		CoroutineTracker.Instance.DumpRunningInstances ();
	}
	IEnumerator WaitAndMove(float waitTime) {
		yield return new WaitForSeconds(waitTime);
		Vector3 position = transform.position;
		position.y += 1;
		transform.position = position;
		print("WaitAndMove " + Time.time);
	}
}

Singleton.cs

/// Original Source: http://wiki.unity3d.com/index.php/Singleton
/// License: Creative Commons

using UnityEngine;

/// <summary>
/// Be aware this will not prevent a non singleton constructor
///   such as `T myT = new T();`
/// To prevent that, add `protected T () {}` to your singleton class.
/// 
/// As a note, this is made as MonoBehaviour because we need Coroutines.
/// </summary>
public class Singleton<T> : MonoBehaviour where T : MonoBehaviour
{
	private static T _instance;
	
	private static object _lock = new object();
	
	public static T Instance
	{
		get
		{
			if (applicationIsQuitting) {
				Debug.LogWarning("[Singleton] Instance '"+ typeof(T) +
				                 "' already destroyed on application quit." +
				                 " Won't create again - returning null.");
				return null;
			}
			
			lock(_lock)
			{
				if (_instance == null)
				{
					_instance = (T) FindObjectOfType(typeof(T));
					
					if ( FindObjectsOfType(typeof(T)).Length > 1 )
					{
						Debug.LogError("[Singleton] Something went really wrong " +
						               " - there should never be more than 1 singleton!" +
						               " Reopenning the scene might fix it.");
						return _instance;
					}
					
					if (_instance == null)
					{
						GameObject singleton = new GameObject();
						_instance = singleton.AddComponent<T>();
						singleton.name = "(singleton) "+ typeof(T).ToString();
						
						DontDestroyOnLoad(singleton);
						
						Debug.Log("[Singleton] An instance of " + typeof(T) + 
						          " is needed in the scene, so '" + singleton +
						          "' was created with DontDestroyOnLoad.");
					} else {
						Debug.Log("[Singleton] Using instance already created: " +
						          _instance.gameObject.name);
					}
				}
				
				return _instance;
			}
		}
	}
	
	private static bool applicationIsQuitting = false;
	/// <summary>
	/// When Unity quits, it destroys objects in a random order.
	/// In principle, a Singleton is only destroyed when application quits.
	/// If any script calls Instance after it have been destroyed, 
	///   it will create a buggy ghost object that will stay on the Editor scene
	///   even after stopping playing the Application. Really bad!
	/// So, this was made to be sure we're not creating that buggy ghost object.
	/// </summary>
	public void OnDestroy () {
		applicationIsQuitting = true;
	}
}