No space above bars when trying to customize y-axis in ggplot2
<p>I'm trying to customize the y-axis in ggplot and can't find out how to make space above the bars. 
Here's a working example:</p>

<pre><code>df &lt;- data.frame(Place=rep(c('A','B','C','D'),each=2),
     Year=rep(c('14','15'),4), 
     Count=c(69400, 114443,  75922, 137006,  23062,  14504,  97440, 294008))
library('ggplot2')
ggplot(df,aes(x=Year,y=Count))+
       facet_wrap(~Place)+theme_bw()+
       geom_bar(stat = "identity",color="black")+
       scale_y_discrete(limits=c(0,100000,200000,300000), 
                        breaks=seq(0,300000,100000), 
                        labels=c("0", "100", "200","300"))
</code></pre>

<p><a href="https://i.stack.imgur.com/OUcEm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OUcEm.png" alt="enter image description here"></a></p>

<p>Any solutions?</p>