remove years into the future hardcode

models/intermediate/cross/int_daily_currency_exchange_rates.sql

@@ -1,3 +1,11 @@
+/* 
+How deep into the future since the last available real rate should rates be
+projected. Must follow be a valid postgres interval string, such as '1 years'
+See examples here:
+https://www.postgresql.org/docs/current/datatype-datetime.html#DATATYPE-INTERVAL-INPUT-EXAMPLES 
+*/
+{% set interval_into_the_future = "'3 years'" %}
+
 with
     stg_xedotcom__exchange_rates as (
         select * from {{ ref("stg_xedotcom__exchange_rates") }}
@@ -31,7 +39,7 @@ with
                     select max(most_recent_date_utc)
                     from most_recent_xe_date_per_curr_pair
                 )::timestamp
-                + interval '3 years',
+                + interval {{ interval_into_the_future }},
                 '1 day'::interval
             ) day_series
     ),