Untitled

select name, count(*) as cnt from (
  select cfv.client_id, cfo.name from client_field_value as cfv
  left join client_field_value_client_field_option as cfvcfo
  	on cfv.id=cfvcfo.client_field_value_id
  left join client_field_option as cfo
  	on cfvcfo.client_field_option_id=cfo.id
  where cfv.field_id=16 and
  	cfv.client_id in (
    	select id from client
    	where created_at between '2020-01-01' and '2021-01-01'
	)
) as reasons
group by name
order by cnt desc