Year	Percent
1950	11.39334
1955	7.59673
1960	8.27596
1965	11.06307
1970	12.64789
1975	12.86348
1980	12.10409
1985	11.59407
1990	11.37286
1995	11.29116
2000	12.23602
2005	11.67065
2010	9.02609
2015	8.53965
2020	8.45456
2025	10.09251
2030	9.33151
2035	8.30867
2040	7.48265
2045	7.19907
2050	7.28837
2055	7.3062
2060	7.03552
2065	6.57772
2070	6.19769
2075	6.01896
2080	5.98258
2085	5.95322
2090	5.83243
2095	5.64012
2100	5.46449