Year	Percent
1950	10.86835
1955	10.78592
1960	10.63402
1965	10.23859
1970	9.67461
1975	9.18947
1980	7.73988
1985	7.6113
1990	7.40337
1995	7.21104
2000	6.72695
2005	6.28284
2010	6.59051
2015	6.49221
2020	6.52626
2025	6.19661
2030	5.88658
2035	5.67822
2040	5.64454
2045	5.69074
2050	5.70689
2055	5.63083
2060	5.50658
2065	5.38922
2070	5.31421
2075	5.28573
2080	5.26157
2085	5.21632
2090	5.1386
2095	5.04836
2100	4.97139