Year	Percent
1950	9.74634
1955	9.82832
1960	9.95534
1965	8.58698
1970	10.35379
1975	12.34505
1980	11.87198
1985	8.27361
1990	8.7624
1995	8.47941
2000	8.94575
2005	8.38634
2010	7.58933
2015	6.84004
2020	6.65344
2025	7.04085
2030	7.06545
2035	6.87192
2040	6.67595
2045	6.51991
2050	6.36325
2055	5.866
2060	5.42325
2065	5.20115
2070	5.14802
2075	5.15712
2080	5.12911
2085	5.05394
2090	4.96178
2095	4.90839
2100	4.92331