Year	Percent
1950	14.73037
1955	10.21974
1960	17.03045
1965	14.06644
1970	16.80164
1975	14.5897
1980	9.64954
1985	10.08555
1990	9.60708
1995	9.4963
2000	8.6687
2005	7.97491
2010	7.08941
2015	6.77251
2020	6.70544
2025	6.58012
2030	6.29694
2035	5.91207
2040	5.58107
2045	5.42719
2050	5.42999
2055	5.43798
2060	5.35801
2065	5.20418
2070	5.06166
2075	4.98677
2080	4.98484
2085	4.99803
2090	4.97267
2095	4.90495
2100	4.82866